Stepniewski, A. (1992). Birds of the Yakima River Canyon. U.S. Dept. of the Interior, Bureau of Land Management, Spokane District, Wenatchee Resource Area.
Cita Chicago Style (17a ed.)Stepniewski, Andrew. Birds of the Yakima River Canyon. Wenatchee, Wash.: U.S. Dept. of the Interior, Bureau of Land Management, Spokane District, Wenatchee Resource Area, 1992.
Cita MLA (8a ed.)Stepniewski, Andrew. Birds of the Yakima River Canyon. U.S. Dept. of the Interior, Bureau of Land Management, Spokane District, Wenatchee Resource Area, 1992.
Precaución: Estas citas no son 100% exactas.