APA (7e ed.) Bronvermelding
Roberts, J. (1973). Civilization: Volume II/Journey to the modern world. CRM books.
Chicago (17e ed.) Bronvermelding
Roberts, John. Civilization: Volume II/Journey to the Modern World. California: CRM books, 1973.
MLA (9e ed.) Bronvermelding
Roberts, John. Civilization: Volume II/Journey to the Modern World. CRM books, 1973.
Let op: Deze citaties zijn niet altijd 100% accuraat.