Metcalf , C. (1962). Destructive and Useful Insects (4th ed.). Tata Mc Graw Hill.
Cita Chicago (17th ed.)Metcalf , C.L. Destructive and Useful Insects. 4th ed. New Delhi: Tata Mc Graw Hill, 1962.
Cita MLA (9th ed.)Metcalf , C.L. Destructive and Useful Insects. 4th ed. Tata Mc Graw Hill, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.