Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (8e éd.)

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