APA (7th ed.) Citation

Clark, A. H. (1938). A new genus of starfishes from Puerto Rico (with one plate). Smithsonian Institution.

Chicago Style (17th ed.) Citation

Clark, Austin Hobart. A New Genus of Starfishes from Puerto Rico (with One Plate). City of Washington: Smithsonian Institution, 1938.

MLA (9th ed.) Citation

Clark, Austin Hobart. A New Genus of Starfishes from Puerto Rico (with One Plate). Smithsonian Institution, 1938.