APA (7th ed.) Zitazioa
Mannion, A. M. (1999). Natural environmental change: The last 3 million years. Routledge.
Chicago Style (17th ed.) Zitazioa
Mannion, Antoinette M. Natural Environmental Change: The Last 3 Million Years. London ; New York: Routledge, 1999.
MLA (9th ed.) Zitazioa
Mannion, Antoinette M. Natural Environmental Change: The Last 3 Million Years. Routledge, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.