APA (7th ed.) Citation

Angus, R. B. (1970). A revision of the beetles of the genus Helophorus F. (Coleoptera: Hydrophilidae) subgeneral Orphelophorus d'Orchymont, Gephelophorus Sharp and Meghelophorus Kuwert. Helsingfors.

Chicago Style (17th ed.) Citation

Angus, R. B. A Revision of the Beetles of the Genus Helophorus F. (Coleoptera: Hydrophilidae) Subgeneral Orphelophorus D'Orchymont, Gephelophorus Sharp and Meghelophorus Kuwert. Helsinki: Helsingfors, 1970.

MLA (8th ed.) Citation

Angus, R. B. A Revision of the Beetles of the Genus Helophorus F. (Coleoptera: Hydrophilidae) Subgeneral Orphelophorus D'Orchymont, Gephelophorus Sharp and Meghelophorus Kuwert. Helsingfors, 1970.