Kelman, S. (1990). Procurement and public management: The fear of dicretion and the quality of government performance. The AEI Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Kelman, Steven. Procurement and Public Management: The Fear of Dicretion and the Quality of Government Performance. Washington, D.C.: The AEI Press, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Kelman, Steven. Procurement and Public Management: The Fear of Dicretion and the Quality of Government Performance. The AEI Press, 1990.
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