Cita APA (7th ed.)

Snodgrass, R. (1935). Principles of Insect Morphology. McGraw Hill.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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