Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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