Kagan, D., Ozment, S. E., & Turner, F. M. (1987). The Western heritage (3rd ed.). Macmillan.
Chicago Style aipamenaKagan, Donald, Steven E. Ozment, and Frank M. Turner. The Western Heritage. 3rd ed. New York: Macmillan, 1987.
MLA aipamenaKagan, Donald, et al. The Western Heritage. 3rd ed. Macmillan, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.