Dyfyniad APA

Heyer, P. a. U. (2019). Communication in History: Stone Age Symbols to Social Media (Seventh Edition.). Routledge.

Dyfyniad Arddull Chicago

Heyer, Paul and Urquhart. Communication in History: Stone Age Symbols to Social Media. Seventh Edition. New York: Routledge, 2019.

Dyfyniad MLA

Heyer, Paul and Urquhart. Communication in History: Stone Age Symbols to Social Media. Seventh Edition. Routledge, 2019.

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