APA (7th ed.) Citation

National Geographic Book Service & Bennett, R. S. (1991). National Geographic picture atlas of our world. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Book Service and Ross S. Bennett. National Geographic Picture Atlas of Our World. Washington: National Geographic Society, 1991.

MLA (9th ed.) Citation

National Geographic Book Service and Ross S. Bennett. National Geographic Picture Atlas of Our World. National Geographic Society, 1991.