APA (7th ed.) Citation
(1935). The national geographical magazine: Index (January-June,1935) (ed.). National geographical society.
Chicago Style (17th ed.) Citation
The National Geographical Magazine: Index (January-June,1935). ed. Washington: National geographical society, 1935.
MLA (9th ed.) Citation
The National Geographical Magazine: Index (January-June,1935). ed. National geographical society, 1935.
Warning: These citations may not always be 100% accurate.