APA (7th ed.) Citation

Wingfield, J. C. (1989). The Rocky Mountains. Raintree Publishers.

Chicago Style (17th ed.) Citation

Wingfield, John C. The Rocky Mountains. Milwaukee: Raintree Publishers, 1989.

MLA (9th ed.) Citation

Wingfield, John C. The Rocky Mountains. Raintree Publishers, 1989.

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