APA (7 वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development. (2019). Reforming isssteson's public procurement for sustainability. OECD.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development. Reforming Isssteson's Public Procurement for Sustainability. Paris, France: OECD, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development. Reforming Isssteson's Public Procurement for Sustainability. OECD, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.