APA (7th ed.) Citation

Broderbund & National Geographic Interactive. (1888). National Geographic Magazine [computer file]: 1940s (vol. LXXVII, no. 1) Jan. 1940-April 1943, May 1943-August 1946, September 1946-December 1949. National Geographic Society.

Chicago Style (17th ed.) Citation

Broderbund and National Geographic Interactive. National Geographic Magazine [computer File]: 1940s (vol. LXXVII, No. 1) Jan. 1940-April 1943, May 1943-August 1946, September 1946-December 1949. Washington, CD: National Geographic Society, 1888.

MLA (9th ed.) Citation

Broderbund and National Geographic Interactive. National Geographic Magazine [computer File]: 1940s (vol. LXXVII, No. 1) Jan. 1940-April 1943, May 1943-August 1946, September 1946-December 1949. National Geographic Society, 1888.

Warning: These citations may not always be 100% accurate.