APA (7th ed.) Citation

Smithsonian Institution. (1944). A new shipworm from the Panama Canal. [s.n.].

Chicago Style (17th ed.) Citation

Smithsonian Institution. A New Shipworm from the Panama Canal. [Washington]: [s.n.], 1944.

MLA (9th ed.) Citation

Smithsonian Institution. A New Shipworm from the Panama Canal. [s.n.], 1944.