Dyfyniad APA

(1989). International encyclopedia of communications ed by Erik Barnouw etc. 4v. New York.

Dyfyniad Arddull Chicago

International Encyclopedia of Communications Ed by Erik Barnouw Etc. 4v. OUP: New York, 1989.

Dyfyniad MLA

International Encyclopedia of Communications Ed by Erik Barnouw Etc. 4v. New York, 1989.

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