Gaya APA

Cantor, N, F., Werthman, M, S. (1972). Ancient civilization : 4000 BC - 400 AD (2nd ed). New York: Thomas Y. Crowell.

Gaya MLA

Cantor, Norman, F.., Werthman, Michael, S.. "Ancient civilization : 4000 BC - 400 AD". 2nd ed New York: Thomas Y. Crowell, 1972. Text.