Cita APA

Black, S. (1978). Practical public relations (4th.). Pitman.

Citación estilo Chicago

Black, Sam. Practical Public Relations. 4th. London: Pitman, 1978.

Cita MLA

Black, Sam. Practical Public Relations. 4th. Pitman, 1978.

Warning: These citations may not always be 100% accurate.