Spangler, P. J., & Perkins, P. D. (1989). A revision of the neotropical aquatic beetle genus stenhel monides (coleoptera: Elmidae). Washington,D.C.: Smithsonia Institution Press.
Chicago Style CitationSpangler, Paul J., and Phillip D. Perkins. A Revision of the Neotropical Aquatic Beetle Genus Stenhel Monides (coleoptera: Elmidae). Washington,D.C.: Smithsonia Institution Press, 1989.
MLA CitationSpangler, Paul J., and Phillip D. Perkins. A Revision of the Neotropical Aquatic Beetle Genus Stenhel Monides (coleoptera: Elmidae). Washington,D.C.: Smithsonia Institution Press, 1989.
Warning: These citations may not always be 100% accurate.