Cita APA (7a ed.)

Smetana, A. (1980). Revision of the genus Hydrochara berth. (Coleoptera. Hydrophilidae). Entomological Society of Canada.

Cita Chicago Style (17a ed.)

Smetana, Aleš. Revision of the Genus Hydrochara Berth. (Coleoptera. Hydrophilidae). Ottawa: Entomological Society of Canada, 1980.

Cita MLA (9a ed.)

Smetana, Aleš. Revision of the Genus Hydrochara Berth. (Coleoptera. Hydrophilidae). Entomological Society of Canada, 1980.