APA (7th ed.) Citation

National Geographic Society (U.S.). National Geographic school bulletin. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). National Geographic School Bulletin. Washington, D.C.: National Geographic Society.

MLA (8th ed.) Citation

National Geographic Society (U.S.). National Geographic School Bulletin. National Geographic Society.

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