Cita APA

Black, S. (2001). Practice of public relations (4th ed.). Boston, [etc.]: Butterworth-Heinemann.

Citación estilo Chicago

Black, Sam. Practice of Public Relations. 4th ed. Boston, [etc.]: Butterworth-Heinemann, 2001.

Cita MLA

Black, Sam. Practice of Public Relations. 4th ed. Boston, [etc.]: Butterworth-Heinemann, 2001.

Precaución: Estas citas no son 100% exactas.