Manning, H., Spring, I., & Spring, V. (1991). Hiking the great Northwest. Mountaineers.
Cita Chicago Style (17a ed.)Manning, Harvey, Ira Spring, y Vicky Spring. Hiking the Great Northwest. Seattle: Mountaineers, 1991.
Cita MLA (8a ed.)Manning, Harvey, et al. Hiking the Great Northwest. Mountaineers, 1991.
Precaución: Estas citas no son 100% exactas.