Beckey, F. (1987). Cascade alpine guide: Climbing and high routes (2nd ed.). Mountaineers.
Cita Chicago Style (17a ed.)Beckey, Fred. Cascade Alpine Guide: Climbing and High Routes. 2nd ed. Seattle, Wash.: Mountaineers, 1987.
Cita MLA (8a ed.)Beckey, Fred. Cascade Alpine Guide: Climbing and High Routes. 2nd ed. Mountaineers, 1987.
Precaución: Estas citas no son 100% exactas.