APA (7th ed.) Zitazioa
Graves, N., Lidstone , J., & Naish, M. (1987). People and environment: A world perspective. Heinemann.
Chicago Style (17th ed.) Zitazioa
Graves, Norman, John Lidstone , eta Michael Naish. People and Environment: A World Perspective. London: Heinemann, 1987.
MLA (9th ed.) Zitazioa
Graves, Norman, et al. People and Environment: A World Perspective. Heinemann, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.