Reilly, P. (in press) Belief Echoes. In Nai, A. (ed) Encyclopedia of Political Communication, Edward Elgar Publishing.

Reilly, P. and Salojärvi, V. Introduction, In Reilly, P. and Salojärvi, V. (eds) De)constructing societal threats during times of deep mediatization, London: Routledge (pp.1-5).

Ashwell, C. and Reilly, P. (2023) Resisting (everyday) racism on social media: Analysing responses to the  2018 Mary Beard Twitterstorm. In Poulakidakos, S., Veneti, A., and Rovisco, M. (eds) Social Movements and Everyday Acts of Resistance: Solidarity in a Changing World, London: Routledge (pp.156-173).

Reilly, P. (2023) Watching the Watchers: Sousveillance as a political response to surveillance societies. In Veneti, A., & Lilleker, D (eds) Research Handbook on Visual Politics, Cheltenham: Edward Elgar Publishing (pp.395-406).[pdf]

Veneti, A., Reilly, P., & Lilleker, D. (2022). The symbolic importance of place in photojournalist accounts of the anti-austerity protests in Greece. In J. Morrison., J. Birks & M. Berry (Eds.) Routledge Companion to Political Journalism, London: Routledge (pp.394-403).

Zhao, X. and Reilly, P. (2021) Breaking down barriers? ICTs, international students and intercultural communication within UK Higher Education institutions. In Brassier-Rodrigues, C., and Brasier, P. (eds) A collection of pedagogical approaches aimed at developing students’ intercultural sensitivity by internationalization at home, London: Peter Lang (pp.157-278). [pdf]

Petersen, L., Fallou, L., Reilly, P., and Serafinelli, E. (2021) Expectations vs. Practice in Critical Infrastructure Operator Crisis Communication: Lessons Learnt from Portugal, France, Norway and Sweden. In J.W. Beard (ed) Information Technology Applications for Crisis Response and Management, Hershey, Pennsylvania: IGI Global (pp. 24-50).

Reilly, P. (2020). Social media and sousveillance.In L. Pérez-González., B. Blaagaard & M. Baker (eds) Routledge Encyclopedia of Citizen Media, London: Routledge (pp.390-394). [pdf]

Reilly, P. (2020). Digital media and disinformation in a deeply divided society: Reflections from ‘post-conflict’ Northern Ireland. In E. Kużelewska., G.Terzis., D.Trottier & D. Kloza (Eds.) Disinformation and Digital Media as a Challenge for Democracy, European Integration and Democracy Series, Volume 6, (pp. 179-200). Cambridge: Intersentia. [pdf]

Petersen, L., Fallou, L., Reilly, P., and Serafinelli, E. (2019). Public expectations of social media use by critical infrastructure operators during crises: lessons learned from France. In: Y. Murayama., D. Velev & P. Zlateva. (Eds.) Information Technology in Disaster Risk Reduction. ITDRR 2017. IFIP Advances in Information and Communication Technology, 516 (pp.77-189). New York: Springer.

Gordon, F and Reilly, P. (2018). Digital weapons in a post-conflict society. In J.  Mair., R. Tait., R. Clark., R. Snoddy & N. Fowler (Eds.) Anti-social media (pp.29-34). London: Abramis. [pdf]

Reilly, P. (2017) Tweeting for Peace? Twitter and the 2014 Ardoyne parade dispute, in Reilly, P., Veneti, A and Atanasova, D. (eds) (2016) Politics, Protest, Emotion: Interdisciplinary Perspectives: A Book of Blogs, Digital Societies Group, University of Sheffield.

Claydon, E.A, Reilly, P., and Gunter, B (2015). Dis/Enablement? An analysis of the representation of impairment and disability on British terrestrial television pre- and post- the Paralympics. In D.Jackson., C. Hodges., M. Molesworth & R. Scullion (Eds.) Reframing disability? Media, (dis)empowerment and voice in the 2012 Paralympics (pp.37-65). London: Routledge.

Reilly, P. (2014) The Battle of Stokes Croft on YouTube: The Ethical Challenges associated with the study of online comments, A Book of Blogs- blurring the boundaries, using social media for social research, New Social Media, New Social Science, NatCen Social Research & Sage.

Reilly, P. (2013). Ourselves Alone (but making connections): The social media strategies of Sinn Fein. In P. Nixon., R. Rawal & D. Mercea (Eds.)Chasing The Promise of Internet Politics(pp.157-168). London: Routledge. [pdf]

Reilly, P. (2008). ‘Googling Terrorists: Are Northern Irish terrorists visible on Internet search engines?’ In A. Spink & M. Zimmer (Eds.) Search Engines: Interdisciplinary Perspectives (pp.151-177). New York: Springer.[pdf]

Reilly, P. (2006). Civil Society, the Internet and Terrorism: case studies from Northern Ireland. In S. Oates., D. Owen & R.K. Gibson (Eds.) The Internet and Politics: Citizens, voters and activists(pp.118 – 135). London: Routledge.[pdf]