APA (7th ed.) Citation

Smithsonian Institution. (1919). Proceedings of U.S. National Museum, Vol. 56. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Proceedings of U.S. National Museum, Vol. 56. [Washington]: GPO, 1919.

MLA (9th ed.) Citation

Smithsonian Institution. Proceedings of U.S. National Museum, Vol. 56. GPO, 1919.