APA (7th ed.) Citation

Levin, H. L. (1994). The earth through time / Harold L. Levin (4th ed., updated version.). Saunders College Pub.

Chicago Style (17th ed.) Citation

Levin, Harold L. The Earth Through Time / Harold L. Levin. 4th ed., updated version. Fort Worth: Saunders College Pub, 1994.

MLA (9th ed.) Citation

Levin, Harold L. The Earth Through Time / Harold L. Levin. 4th ed., updated version. Saunders College Pub, 1994.

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