(1981). Metaphors for evaluation: Sources of new methods. Sage.
Cita Chicago (17th ed.)Metaphors for Evaluation: Sources of New Methods. Beverly Hills: Sage, 1981.
Cita MLA (9th ed.)Metaphors for Evaluation: Sources of New Methods. Sage, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.