Cita APA (7th ed.)

Center, A. H., & Walsh, F. E. (1981). Public relations practices: Case studies. Prentice Hall.

Cita Chicago (17th ed.)

Center, Allen H., i Frank E. Walsh. Public Relations Practices: Case Studies. Englewood Cliffs, New Jersey: Prentice Hall, 1981.

Cita MLA (9th ed.)

Center, Allen H., i Frank E. Walsh. Public Relations Practices: Case Studies. Prentice Hall, 1981.