APA Style

PUB:, . (1962). NATIONAL GEOGRAPHIC. The. vol. 121, vol. 120, vol. 115, vol. 114, vol. 117, vol. 113 (6). : NATIONAL GEOGRAPHIC SOCIETY, WASHINGTON, 1962, 1961, 1959, 1960, 1958.

MLA Style

PUB:, . "NATIONAL GEOGRAPHIC. The. vol. 121, vol. 120, vol. 115, vol. 114, vol. 117, vol. 113". 6 : NATIONAL GEOGRAPHIC SOCIETY, WASHINGTON, 1962, 1961, 1959, 1960, 1958, 1962. Text.