Sierra Club. (2000). Wild America: Protecting the lands of Lewis & Clark. Sierra Club.
Cita Chicago Style (17a ed.)Sierra Club. Wild America: Protecting the Lands of Lewis & Clark. [San Francico, CA]: Sierra Club, 2000.
Cita MLA (8a ed.)Sierra Club. Wild America: Protecting the Lands of Lewis & Clark. Sierra Club, 2000.
Precaución: Estas citas no son 100% exactas.