Leon, R., Davis, C., & Leon, C. (2007). North Idaho trail guide. Sierra Club, Upper Columbia River.
Chicago Style (17th ed.) CitationLeon, Rich, Chase Davis, and Carolyn Leon. North Idaho Trail Guide. Spokane, Wash.: Sierra Club, Upper Columbia River, 2007.
MLA引文Leon, Rich, et al. North Idaho Trail Guide. Sierra Club, Upper Columbia River, 2007.
警告:這些引文格式不一定是100%准確.