APA (7th ed.) Citation

Spangler, P. J., & Santiago, S. (1989). A revision of the neotropical aquatic beetle genera Disersus, pseudodisersus, and potamophilops (Coleoptera: Elmidae). Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Spangler, Paul J., and Silva Santiago. A Revision of the Neotropical Aquatic Beetle Genera Disersus, Pseudodisersus, and Potamophilops (Coleoptera: Elmidae). Washington: Smithsonian Institution Press, 1989.

MLA (9th ed.) Citation

Spangler, Paul J., and Silva Santiago. A Revision of the Neotropical Aquatic Beetle Genera Disersus, Pseudodisersus, and Potamophilops (Coleoptera: Elmidae). Smithsonian Institution Press, 1989.