APA Style
PUB:, .
(1916).
NATIONAL GEOGRAPHIC MAGAZINE. The. vol. 30
(
6)
.
:
NATIONAL GEOGRAPHIC SOCIETY, WASHINGTON, 1916.
MLA Style
PUB:, .
"NATIONAL GEOGRAPHIC MAGAZINE. The. vol. 30".
6
:
NATIONAL GEOGRAPHIC SOCIETY, WASHINGTON, 1916,
1916.
Text.