APA (7th ed.) Citation

Oygur, S., & Wolfe, G. W. (1991). Classification, distribution, and phylogeny of North American (north of Mexico) species of Gyrinus Müller (Coleoptera: Gyrinidae).

Chicago Style (17th ed.) Citation

Oygur, Sule, and G. W. Wolfe. Classification, Distribution, and Phylogeny of North American (north of Mexico) Species of Gyrinus Müller (Coleoptera: Gyrinidae). New York, 1991.

MLA (9th ed.) Citation

Oygur, Sule, and G. W. Wolfe. Classification, Distribution, and Phylogeny of North American (north of Mexico) Species of Gyrinus Müller (Coleoptera: Gyrinidae). 1991.