APA aipamena

Orlov, Y., & Hardin, H. Fundamentals of Paleontology.

Chicago Style aipamena

Orlov, Yu.A, and Hilary Hardin. Fundamentals of Paleontology. Jarsusalam.

MLA aipamena

Orlov, Yu.A, and Hilary Hardin. Fundamentals of Paleontology.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.