Beckey, F., & Bjørnstad, E. (1965). Guide to Leavenworth rock-climbing areas. The Mountaineers.
Cita Chicago Style (17a ed.)Beckey, Fred, y Eric Bjørnstad. Guide to Leavenworth Rock-climbing Areas. Seattle: The Mountaineers, 1965.
Cita MLA (8a ed.)Beckey, Fred, y Eric Bjørnstad. Guide to Leavenworth Rock-climbing Areas. The Mountaineers, 1965.
Precaución: Estas citas no son 100% exactas.