Cita APA
Roberts, J. (1973). Civilization: Volume II/Journey to the modern world. CRM books.
Citación estilo Chicago
Roberts, John. Civilization: Volume II/Journey to the Modern World. California: CRM books, 1973.
Cita MLA
Roberts, John. Civilization: Volume II/Journey to the Modern World. CRM books, 1973.
Warning: These citations may not always be 100% accurate.