APA (7th ed.) Citation

Smithsonian Institution. (1910). On some West Indian echinoids. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. On Some West Indian Echinoids. [Washington]: GPO, 1910.

MLA (9th ed.) Citation

Smithsonian Institution. On Some West Indian Echinoids. GPO, 1910.

Warning: These citations may not always be 100% accurate.