Crowley David & Heyer Paul. (2012). Communication in History: Technology, Culture, Society (3rd ed.). Collenmacmilla.
Citazione stile Chigago Style (17a edizione)Crowley David e Heyer Paul. Communication in History: Technology, Culture, Society. 3rd ed. New York: Collenmacmilla, 2012.
Citatione MLA (9a ed.)Crowley David e Heyer Paul. Communication in History: Technology, Culture, Society. 3rd ed. Collenmacmilla, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.