Kelman, S. (1990). Procurement and public management: The fear of discretion and the quality of government performance. AEI Press.

Kelman, Steven. Procurement and Public Management: The Fear of Discretion and the Quality of Government Performance. Washington, D.C: AEI Press, 1990.

Kelman, Steven. Procurement and Public Management: The Fear of Discretion and the Quality of Government Performance. AEI Press, 1990.