Citazione Stile APA (7a Edizione)

(1999). National Geographic Atlas of the World (7th ed.). National geographic society.

Citazione stile Chigago Style (17a edizione)

National Geographic Atlas of the World. 7th ed. Washington D. C.: National geographic society, 1999.

Citatione MLA (9a ed.)

National Geographic Atlas of the World. 7th ed. National geographic society, 1999.