APA (7th ed.) Citation

National Geographic Society, Washington, D.C, Prentice, P., Schnall, P., & Weber, C. (1989). Search for battleship: Bismark. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society, Washington, D.C, Patrick Prentice, Peter Schnall, and Christine Weber. Search for Battleship: Bismark. Washington, D.C: The Society, 1989.

MLA (9th ed.) Citation

National Geographic Society, Washington, D.C, et al. Search for Battleship: Bismark. The Society, 1989.