Gaya APA

Holland, J, L., Swanson, C, P. (1985). Making vocational choices a theory of vocational personalities & work ì environments . New Jersey: Prentce-Hall.

Gaya MLA

Holland, John, L.., Swanson, Carl, P.. "Making vocational choices a theory of vocational personalities & work ì environments". New Jersey: Prentce-Hall, 1985. Text.