APA (7th ed.) Citation

Clark, A. H. (1936). Four new brittlestars from Puerto Rico (with three plates). Smithsonian Institution.

Chicago Style (17th ed.) Citation

Clark, Austin Hobart. Four New Brittlestars from Puerto Rico (with Three Plates). City of Washington: Smithsonian Institution, 1936.

MLA (9th ed.) Citation

Clark, Austin Hobart. Four New Brittlestars from Puerto Rico (with Three Plates). Smithsonian Institution, 1936.