Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

Snodgrass, R E. Principles of Insect Morphology. McGraw-Hill, 1935.