Cita APA (7a ed.)
Garret, W. E. National Geographic: Vol. 167, no. 1, January 1985. National Geographic Society.
Cita estilo Chicago (17a ed.)
Garret, Wilbur E. National Geographic: Vol. 167, No. 1, January 1985. Washington, EUA: National Geographic Society.
Cita MLA (9a ed.)
Garret, Wilbur E. National Geographic: Vol. 167, No. 1, January 1985. National Geographic Society.
警告：這些引文格式不一定是100％准確.