APA (7th ed.) Citation

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.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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