Cita APA (7a ed.)
Rinard, J. E. Zoos without Cages. National Geographic Society.
Cita estilo Chicago (17a ed.)
Rinard, Judith E. Zoos Without Cages. Washington, EUA: National Geographic Society.
Cita MLA (9a ed.)
Rinard, Judith E. Zoos Without Cages. National Geographic Society.
警告：这些引文格式不一定是100％准确.