APA (7th ed.) Citation

Gertsch, W. J. (1979). American spiders (2d ed.). Van Nostrand Reinhold Co..

Chicago Style (17th ed.) Citation

Gertsch, Willis John. American Spiders. 2d ed. New York: Van Nostrand Reinhold Co., 1979.

MLA (8th ed.) Citation

Gertsch, Willis John. American Spiders. 2d ed. Van Nostrand Reinhold Co., 1979.