(1999). National Geographic Atlas of the World (7th ed.). National geographic society.
Chicago (17e ed.) BronvermeldingNational Geographic Atlas of the World. 7th ed. Washington D. C.: National geographic society, 1999.
MLA (9e ed.) BronvermeldingNational Geographic Atlas of the World. 7th ed. National geographic society, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.