Style de citation APA (7e éd.)

National Geographic Society, Lee, C. E., Miller, M., O'Neill, T., Richards, B., & Urquhart, J. C. (1987). Window on America: Discovering her natural beauty. National Geographic Society.

Style de citation Chicago (17e éd.)

National Geographic Society, Christine Eckstrom Lee, Mark Miller, Thomas O'Neill, Bill Richards, et Jennifer C. Urquhart. Window on America: Discovering Her Natural Beauty. Washington: National Geographic Society, 1987.

Style de citation MLA (9e éd.)

National Geographic Society, et al. Window on America: Discovering Her Natural Beauty. National Geographic Society, 1987.