Snodgrass, R. E. (1935). Principles of insect morphology. McGraw-Hill.
Chicago Style (17th ed.) CitationSnodgrass, R. E. Principles of Insect Morphology. New York: McGraw-Hill, 1935.
MLA (9th ed.) CitationSnodgrass, R. E. Principles of Insect Morphology. McGraw-Hill, 1935.