Swan, L. A. (1964). Beneficial insects; nature's alternatives to chemical insecticides: Animal predation, parasitism, disease organisms ([1st ed.].). Harper & Row.
Lua i Stíl Chicago (17ú heag.)Swan, Lester A. Beneficial Insects; Nature's Alternatives to Chemical Insecticides: Animal Predation, Parasitism, Disease Organisms. [1st ed.]. New York: Harper & Row, 1964.
Lua MLA (8ú heag.)Swan, Lester A. Beneficial Insects; Nature's Alternatives to Chemical Insecticides: Animal Predation, Parasitism, Disease Organisms. [1st ed.]. Harper & Row, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.