APA (7th ed.) Citation

Levin, H. L. (1978). The Earth through time. Saunders.

Chicago Style (17th ed.) Citation

Levin, Harold L. The Earth Through Time. Philadelphia: Saunders, 1978.

MLA (9th ed.) Citation

Levin, Harold L. The Earth Through Time. Saunders, 1978.

Warning: These citations may not always be 100% accurate.