APA aipamena

Environment and Resources: Geography in an urban age. New York: Macmillan Publishing.

Chicago Style aipamena

Environment and Resources: Geography in an Urban Age. New York: Macmillan Publishing.

MLA aipamena

Environment and Resources: Geography in an Urban Age. New York: Macmillan Publishing.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.