Regester, M., & Larkin, J. (2008). Risk issues and crisis management in public relations: A casebook of best practice (4th ed.). Kogan Page.

Regester, Michael, and Judy Larkin. Risk Issues and Crisis Management in Public Relations: A Casebook of Best Practice. 4th ed. London ; Philadelphia: Kogan Page, 2008.

Regester, Michael, and Judy Larkin. Risk Issues and Crisis Management in Public Relations: A Casebook of Best Practice. 4th ed. Kogan Page, 2008.