Cita APA (7a ed.)
(1935). The national geographical magazine: Index (January-June,1935) (ed.). National geographical society.
Cita Chicago Style (17a ed.)
The National Geographical Magazine: Index (January-June,1935). ed. Washington: National geographical society, 1935.
Cita MLA (9a ed.)
The National Geographical Magazine: Index (January-June,1935). ed. National geographical society, 1935.
Precaución: Estas citas no son 100% exactas.