Cita APA

BLACK, S. (1994). Practical Public Relations Sam Black. Universal Bookshall.

Chicago Style (17th ed.) Citation

BLACK, Sam. Practical Public Relations Sam Black. Universal Bookshall, 1994.

Cita MLA

BLACK, Sam. Practical Public Relations Sam Black. Universal Bookshall, 1994.

Atenció: Aquestes cites poden no estar 100% correctes.