APA (7th ed.) Citation

National Geographic Maps (Firm) & National Geographic Society (U.S.). (2006). Soccer unites the world. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Maps (Firm) and National Geographic Society (U.S.). Soccer Unites the World. Washington, D.C.: National Geographic Society, 2006.

MLA (9th ed.) Citation

National Geographic Maps (Firm) and National Geographic Society (U.S.). Soccer Unites the World. National Geographic Society, 2006.