APA (7th ed.) Citation

Perkins, P. D. (2004). A revision of the South African endemic water beetle genus Pneuminion Perkins (Coleoptera: Hydraenidae). Magnolia Press.

Chicago Style (17th ed.) Citation

Perkins, Philip D. A Revision of the South African Endemic Water Beetle Genus Pneuminion Perkins (Coleoptera: Hydraenidae). Auckland, N.Z.: Magnolia Press, 2004.

MLA (9th ed.) Citation

Perkins, Philip D. A Revision of the South African Endemic Water Beetle Genus Pneuminion Perkins (Coleoptera: Hydraenidae). Magnolia Press, 2004.