Perkins, P. D. (1976). Psammophilous Aquatic Beetles in Southern California: A Study of Microhabitat Preferences with Notes on Responses to Stream Alteration (Coleoptera: Hydraenidae and Hydrophilidae). Zenodo.
Cita Chicago (17th ed.)Perkins, Philip D. Psammophilous Aquatic Beetles in Southern California: A Study of Microhabitat Preferences with Notes on Responses to Stream Alteration (Coleoptera: Hydraenidae and Hydrophilidae). Zenodo, 1976.
Cita MLA (9th ed.)Perkins, Philip D. Psammophilous Aquatic Beetles in Southern California: A Study of Microhabitat Preferences with Notes on Responses to Stream Alteration (Coleoptera: Hydraenidae and Hydrophilidae). Zenodo, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.