APA (7th ed.) Citation

Sager, R. J., & Helgren, D. M. (2000). Holt World geography today (Revised edition.). HoltRinehart and WinstonInc.

Chicago Style (17th ed.) Citation

Sager, Robert J., and D. M. Helgren. Holt World Geography Today. Revised edition. Orlando: HoltRinehart and WinstonInc, 2000.

MLA (9th ed.) Citation

Sager, Robert J., and D. M. Helgren. Holt World Geography Today. Revised edition. HoltRinehart and WinstonInc, 2000.

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