Style de citation APA (7e éd.)

Helfer, J. R. (1953). How to know the grasshoppers, cockroache and their allies. WM. C. Brown.

Style de citation Chicago (17e éd.)

Helfer, Jackes R. How to Know the Grasshoppers, Cockroache and Their Allies. Dubuque, Iowa: WM. C. Brown, 1953.

Style de citation MLA (9e éd.)

Helfer, Jackes R. How to Know the Grasshoppers, Cockroache and Their Allies. WM. C. Brown, 1953.