Gertsch, W. J. (1949). American spiders. New York: D. Van Nostrand Company Inc.
Chicago Style CitationGertsch, Willis J. American Spiders. New York: D. Van Nostrand Company Inc, 1949.
MLA CitationGertsch, Willis J. American Spiders. New York: D. Van Nostrand Company Inc, 1949.
Warning: These citations may not always be 100% accurate.