Cita APA

Hershler, R., Holsinger, J. R., & Hubricht, L. (1990). A revision of the North American Freshwater snail genus fontigens (Prosobranchia: Hidrobiidae). Washington: Smithsonian Institution.

Citación estilo Chicago

Hershler, Robert, John R. Holsinger, y Leslie Hubricht. A Revision of the North American Freshwater Snail Genus Fontigens (Prosobranchia: Hidrobiidae). Washington: Smithsonian Institution, 1990.

Cita MLA

Hershler, Robert, John R. Holsinger, y Leslie Hubricht. A Revision of the North American Freshwater Snail Genus Fontigens (Prosobranchia: Hidrobiidae). Washington: Smithsonian Institution, 1990.