APA (7th ed.) Citation

Helgren,David M, Sager,Robert J, & Israel,Saul. (1985). World Geography Today. Holt,Rinehart and Winston publishers.

Chicago Style (17th ed.) Citation

Helgren,David M, Sager,Robert J, and Israel,Saul. World Geography Today. New York: Holt,Rinehart and Winston publishers, 1985.

MLA (9th ed.) Citation

Helgren,David M, et al. World Geography Today. Holt,Rinehart and Winston publishers, 1985.

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