APA (7 वां संस्करण) प्रशस्ति पत्र

(2003). The environmental performance of public procurement: Issues of policy coherence. OECD.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

The Environmental Performance of Public Procurement: Issues of Policy Coherence. Paris, France: OECD, 2003.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

The Environmental Performance of Public Procurement: Issues of Policy Coherence. OECD, 2003.

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