APA (7th ed.) Citation

Leon, R., Davis, C., & Leon, C. (2007). North Idaho trail guide. Sierra Club, Upper Columbia River.

Chicago Style (17th ed.) Citation

Leon, Rich, Chase Davis, and Carolyn Leon. North Idaho Trail Guide. Spokane, Wash.: Sierra Club, Upper Columbia River, 2007.

MLA (8th ed.) Citation

Leon, Rich, et al. North Idaho Trail Guide. Sierra Club, Upper Columbia River, 2007.

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