Yesiloglu, S. & Costello, J. ed. (2020). Influencer Marketing: Building Brand Communities and Engagement. Routledge.
Costello, J. & Biondi, L. (2020) The art of deception: Will fake followers decay trust and can authenticity preserve it? Yesiloglu, S. & Costello, J. ed. Influencer Marketing: Building Brand Communities and Engagement. Routledge.
Costello, J. & Ubanska, K. (2020) “Hope this is not sponsored” – Is an influencer’s credibility impacted when using sponsored versus non-sponsored content? Yesiloglu, S. & Costello, J. ed. Influencer Marketing: Building Brand Communities and Engagement. Routledge.
Costello, J, Homberg, F., & Secchi, D. (2020) The Public Service Motivated Volunteer: Devoting Time or Effort? Nonprofit and Voluntary Sector Quarterly. Online March 2020. https://doi.org/10.1177%2F0899764020911200
Homberg, F., & Costello, J. (2019). Public Service Motivation and Civic Engagement: The Role of Pro-social Motivations in Shaping Society. Palgrave Pivot
Costello, J. (2019) Professed or actual corporate activism: An examination of when Nike’s actions conflict with social marketing efforts. In Corporate Activism: research, case studies and solutions for communicators to address a rising trend. pp. 57-63. Quadriga University of Applied Sciences. Ed. Ana Adi
Best, E., & Costello, J. (2019). The Impact of Public Service Motivation On Fundraising- The Emotional Charity Marketing Flaw. Ekonomski vjesnik/Econviews - Review of Contemporary Business, Entrepreneurship and Economic Issues. 2/2019. 22 pages.
Hayball, L., Waskiw, W. & Costello, J. (2019) An Analysis into the volunteering motivations of individuals in Denmark. Journal of Promotional Communications 7(2) 126-143.
Costello, J., & Oliver, J. (2018). Human Resource Management in the Media. In Handbook of Media Management and Economics (Media Management and Economics Series) (pp. 95-110). USA: Routledge.
Costello, J. (2018). Preparing tomorrow’s practitioners. In S. Waddington (Ed.), Platinum: An anthology of essays crowdsourced from members. Chartered Institute of Public Relations.
Costello, J., Homberg, F., & Secchi, D. (2017). The public service-motivated volunteer devoting time or effort: a review and research agenda. Voluntary Sector Review, 1. doi:10.1332/204080517X14993297654383
Offong, G., & Costello, J. (2017). Enterprise Social Media Impact on Human Resource Practices. Evidence-based HRM: a global forum for empirical scholarship, 36 pages.
Huyen, T., & Costello, J. (2017). Quality versus Quantity: An Investigation into Electronic Word of Mouth’s Influence on Consumer Buying Intention. Journal of Promotional Communications, 5(2), 137-155.
Theofilou, A., Veneti, A., Watson, T., Costello, J., & Musarskaya, M. (n.d.). Proceedings of the International History of Public Relations 2017.
Herath, D., Costello, J., & Homberg, F. (2016). Team Problem Solving and Motivation under Disorganization – An agent-based modeling approach. Team Performance Management, 23(1/2). doi:10.1108/TPM-10-2015-0046