Palmer,laurence e. (1949). Fieldbook of Natural History. McGraw-Hill Book.
Chicago Style aipamenaPalmer,laurence e. Fieldbook of Natural History. New York: McGraw-Hill Book, 1949.
MLA aipamenaPalmer,laurence e. Fieldbook of Natural History. McGraw-Hill Book, 1949.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.