Hirsh, S. P. (1971). The Courage to change: New directions for career education. Englewood Cliffs.
Cita Chicago (17th ed.)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, N. J: Englewood Cliffs, 1971.
Cita MLA (9th ed.)Hirsh, Sharlene Pearlman. The Courage to Change: New Directions for Career Education. Englewood Cliffs, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.