Ursal, S. (2004). Government procurement tool kit (R.A. No. 9184, annotated). Good Governance Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUrsal, Sofronio. Government Procurement Tool Kit (R.A. No. 9184, Annotated). Quezon City, Philippines: Good Governance Books, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUrsal, Sofronio. Government Procurement Tool Kit (R.A. No. 9184, Annotated). Good Governance Books, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.