APA (7th ed.) Citation

Smithsonian Institution. (1918). Grapsoid crabs of America. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Grapsoid Crabs of America. [Washington]: GPO, 1918.

MLA (9th ed.) Citation

Smithsonian Institution. Grapsoid Crabs of America. GPO, 1918.