Hesseling, P. (1966). Strategy of evaluation research in the field of supervisory and management training. Van Gorcum & Co..
Lua i Stíl Chicago (17ú heag.)Hesseling, P. Strategy of Evaluation Research in the Field of Supervisory and Management Training. Assen: Van Gorcum & Co., 1966.
Lua MLA (8ú heag.)Hesseling, P. Strategy of Evaluation Research in the Field of Supervisory and Management Training. Van Gorcum & Co., 1966.
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