APA (7th ed.) Citation

Clausen, C. P. 1. (1940). Entomophagous insects. McGraw-Hill book company.

Chicago Style (17th ed.) Citation

Clausen, Curtis Paul 1893. Entomophagous Insects. New York and London: McGraw-Hill book company, 1940.

MLA (9th ed.) Citation

Clausen, Curtis Paul 1893. Entomophagous Insects. McGraw-Hill book company, 1940.