APA (7th ed.) Citation

Public Relations Society of America. (1981). PRSA directory. Public Relations Society of America.

Chicago Style (17th ed.) Citation

Public Relations Society of America. PRSA Directory. New York, NY: Public Relations Society of America, 1981.

MLA (9th ed.) Citation

Public Relations Society of America. PRSA Directory. Public Relations Society of America, 1981.

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