Cita APA (7a ed.)
Johnsgard, P. A. (2011). Sandhill and whooping cranes: Ancient voices over America's wetlands. University of Nebraska Press.
Cita Chicago Style (17a ed.)
Johnsgard, Paul A. Sandhill and Whooping Cranes: Ancient Voices over America's Wetlands. Lincoln [Neb.]: University of Nebraska Press, 2011.
Cita MLA (9a ed.)
Johnsgard, Paul A. Sandhill and Whooping Cranes: Ancient Voices over America's Wetlands. University of Nebraska Press, 2011.
Precaución: Estas citas no son 100% exactas.