APA (7th ed.) Citation

Johnston, J., & Sheehan, M. (2020). Public relations: Theory and practice (Fourth edition.). Routledge.

Chicago Style (17th ed.) Citation

Johnston, Jane, and Mark Sheehan. Public Relations: Theory and Practice. Fourth edition. London: Routledge, 2020.

MLA (9th ed.) Citation

Johnston, Jane, and Mark Sheehan. Public Relations: Theory and Practice. Fourth edition. Routledge, 2020.