Cita APA (7a ed.)
Grosvenor, G. M. (1980). National geographic: November 1980. National Geographic Society.
Cita estilo Chicago (17a ed.)
Grosvenor, Gilbert M. National Geographic: November 1980. Washington, EUA: National Geographic Society, 1980.
Cita MLA (9a ed.)
Grosvenor, Gilbert M. National Geographic: November 1980. National Geographic Society, 1980.
警告：這些引文格式不一定是100％准確.