Dyfyniad APA

Public Relations Society of America. (1994). Public relations tactics. Public Relations Society of America.

Dyfyniad Arddull Chicago

Public Relations Society of America. Public Relations Tactics. New York, NY: Public Relations Society of America, 1994.

Dyfyniad MLA

Public Relations Society of America. Public Relations Tactics. Public Relations Society of America, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.