APA (7th ed.) Citation

United States National Museum. (1943). Proceedings of National Museum, Vol. 91. [s.n.].

Chicago Style (17th ed.) Citation

United States National Museum. Proceedings of National Museum, Vol. 91. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

United States National Museum. Proceedings of National Museum, Vol. 91. [s.n.], 1943.