Nightingale, D. S. (1991). Evaluation of the Massachusetts Employment and Training (ET) Program. Urban Institute Press.
Cita Chicago (17th ed.)Nightingale, Demetra S. Evaluation of the Massachusetts Employment and Training (ET) Program. Washington, D.C: Urban Institute Press, 1991.
Cita MLA (9th ed.)Nightingale, Demetra S. Evaluation of the Massachusetts Employment and Training (ET) Program. Urban Institute Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.