APA-referens

William E Hopke. (1972). The Encyclopedia Of Careers And Vocational Guidence vol. 2.

Chicago-stil citat

William E Hopke. The Encyclopedia Of Careers And Vocational Guidence Vol. 2. J G Ferguson Publishing Company, 1972.

MLA-referens

William E Hopke. The Encyclopedia Of Careers And Vocational Guidence Vol. 2. 1972.