APA (7e ed.) Bronvermelding

National Geographic. (2006). Soccer unites the world. National Geographic Society.

Chicago (17e ed.) Bronvermelding

National Geographic. Soccer Unites the World. Washington, DC: National Geographic Society, 2006.

MLA (9e ed.) Bronvermelding

National Geographic. Soccer Unites the World. National Geographic Society, 2006.

Let op: Deze citaties zijn niet altijd 100% accuraat.