Cita APA (7a ed.)
National Wildlife Federation. (1963). National wildlife. National Wildlife Federation.
Cita Chicago Style (17a ed.)
National Wildlife Federation. National Wildlife. [Washington, D.C.]: National Wildlife Federation, 1963.
Cita MLA (9a ed.)
National Wildlife Federation. National Wildlife. National Wildlife Federation, 1963.
Precaución: Estas citas no son 100% exactas.