APA (7th ed.) Citation

Manning, H., Spring, I., & Spring, V. (1991). Hiking the great Northwest. Mountaineers.

Chicago Style (17th ed.) Citation

Manning, Harvey, Ira Spring, and Vicky Spring. Hiking the Great Northwest. Seattle: Mountaineers, 1991.

MLA (8th ed.) Citation

Manning, Harvey, et al. Hiking the Great Northwest. Mountaineers, 1991.

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