Hirsh, S. P. (1971). The Courage to change: New directions for career education. Englewood Cliffs.
Citazione stile Chigago Style (17a edizione)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, N. J: Englewood Cliffs, 1971.
Citatione MLA (9a ed.)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, 1971.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.