Citazione APA

Gerken, C. d. (1953). Study your way through school (New, rev. version.). Science Research Associates.

Stile di citazione Chicago

Gerken, C. d'A. Study Your Way Through School. New, rev. version. Chicago: Science Research Associates, 1953.

Citazione MLA

Gerken, C. d'A. Study Your Way Through School. New, rev. version. Science Research Associates, 1953.