Citazione APA

Snodgrass, R. E. (1935). Principles of insect morphology.

Stile di citazione Chicago

Snodgrass, R E. Principles of Insect Morphology. McGraw-Hill Book Co., New York, 1935.

Citazione MLA

Snodgrass, R E. Principles of Insect Morphology. 1935.