APA (7th ed.) Citation

Smithsonian Institution. (1945). Aleutian Islands, their people and natural history. [s.n.].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Aleutian Islands, Their People and Natural History. [Washington]: [s.n.], 1945.

MLA (9th ed.) Citation

Smithsonian Institution. Aleutian Islands, Their People and Natural History. [s.n.], 1945.