APA aipamena

Singer,Ronald. (1999). Encyclopedia of paleontology: A- L. Fitzroy Dearborn Publishers.

Chicago Style aipamena

Singer,Ronald. Encyclopedia of Paleontology: A- L. Chicago: Fitzroy Dearborn Publishers, 1999.

MLA aipamena

Singer,Ronald. Encyclopedia of Paleontology: A- L. Fitzroy Dearborn Publishers, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.