Cita APA

Crowley, D. J., & Heyer, P. (1995). Communication in history: Technology, culture, society (2nd ed.). Longman Publishers USA.

Citación estilo Chicago

Crowley, D. J., and Paul Heyer. Communication in History: Technology, Culture, Society. 2nd ed. White Plains, N.Y: Longman Publishers USA, 1995.

Cita MLA

Crowley, D. J., and Paul Heyer. Communication in History: Technology, Culture, Society. 2nd ed. Longman Publishers USA, 1995.