A revision of the American spiders of the genus Drassyllus (Araneae, Gnaphosidae) /
Norman I. Platnick, Mohammad U. Shadab.

APA Citation

Platnick, N. I., Shadab, M. Umar. (1982). A revision of the American spiders of the genus Drassyllus (Araneae, Gnaphosidae). New York: American Museum of Natural History.

MLA Citation

Platnick, Norman I, and Mohammad Umar Shadab. A Revision of the American Spiders of the Genus Drassyllus (Araneae, Gnaphosidae). New York: American Museum of Natural History, 1982.

Warning: These citations may not always be complete (especially for serials).