Citazione APA

Metcalf, C. L., & Flint, W. P. (1967). Destructive and useful insects. McGraw-Hill.

Stile di citazione Chicago

Metcalf, C. L., e W. P. Flint. Destructive and Useful Insects. McGraw-Hill, 1967.

Citazione MLA

Metcalf, C. L., e W. P. Flint. Destructive and Useful Insects. McGraw-Hill, 1967.