Hirsh, S. P. (1971). The Courage to change: New directions for career education. Englewood Cliffs.
Chicago-referens (17:e uppl.)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, N. J: Englewood Cliffs, 1971.
MLA-referens (9:e uppl.)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.