NGO Forum for Drinking Water Supply and Sanitation (Bangladesh) & Halder, J. (2003). Counting on catalysts. NGO Forum for Drinking Water Supply & Sanitation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNGO Forum for Drinking Water Supply and Sanitation (Bangladesh) और Joseph Halder. Counting on Catalysts. Dhaka: NGO Forum for Drinking Water Supply & Sanitation, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNGO Forum for Drinking Water Supply and Sanitation (Bangladesh) और Joseph Halder. Counting on Catalysts. NGO Forum for Drinking Water Supply & Sanitation, 2003.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.