Cita APA

Hopke, W. E. (1972). Encyclopaedia of careers and vocational guidance (rev. ed.). Doubleday.

Citación estilo Chicago

Hopke, William E. Encyclopaedia of Careers and Vocational Guidance. rev. ed. Chicago: Doubleday, 1972.

Cita MLA

Hopke, William E. Encyclopaedia of Careers and Vocational Guidance. rev. ed. Doubleday, 1972.