APA
(1935). National geographic magazine, Vol.85: January-June, 1944. Washington: National Geographic Society.
Chicago
1935. National geographic magazine, Vol.85: January-June, 1944. Washington: National Geographic Society.
Harvard
(1935). National geographic magazine, Vol.85: January-June, 1944. Washington: National Geographic Society.
MLA
National geographic magazine, Vol.85: January-June, 1944. Washington: National Geographic Society. 1935.
