Cita APA (7th ed.)

Crowley David & Heyer Paul. (2012). Communication in History: Technology, Culture, Society (3rd ed.). Collenmacmilla.

Cita Chicago (17th ed.)

Crowley David i Heyer Paul. Communication in History: Technology, Culture, Society. 3rd ed. New York: Collenmacmilla, 2012.

Cita MLA (9th ed.)

Crowley David i Heyer Paul. Communication in History: Technology, Culture, Society. 3rd ed. Collenmacmilla, 2012.