Hesseling, P. (1982). Effective organization research for development. Pergamon.
Tohutoru Kātū Chicago (17th ed.)Hesseling, Pjotr. Effective Organization Research for Development. Oxford: Pergamon, 1982.
Tohutoro MLA (9th ed.)Hesseling, Pjotr. Effective Organization Research for Development. Pergamon, 1982.
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