APA (7. basım) Alıntı

Levin, H. L. (1996). The earth through time (5th ed.). Saunders College Publishing.

Chicago Style (17. basım) Atıf

Levin, Harold L. The Earth Through Time. 5th ed. Forth Worth, U.S.A: Saunders College Publishing, 1996.

MLA (9th ed.) Atıf

Levin, Harold L. The Earth Through Time. 5th ed. Saunders College Publishing, 1996.