Birot, P. (1966). General Physical Geography. John Wiley & Sons, Inc..
Chicago Style (17th ed.) ZitazioaBirot, Pierre. General Physical Geography. New York: John Wiley & Sons, Inc., 1966.
MLA (9th ed.) ZitazioaBirot, Pierre. General Physical Geography. John Wiley & Sons, Inc., 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.