Sierra Club. Upper Columbia River Group, Whitson, P., & Leon, R. (1987). Spokane trail guide #1. Sierra Club-Spokane Group.
Chicago Style (17th ed.) CitationSierra Club. Upper Columbia River Group, Paula Whitson, and Rich Leon. Spokane Trail Guide #1. Spokane, Wash.: Sierra Club-Spokane Group, 1987.
MLA引文Sierra Club. Upper Columbia River Group, et al. Spokane Trail Guide #1. Sierra Club-Spokane Group, 1987.
警告:這些引文格式不一定是100%准確.