West Bengal Government of, D. o. E. (1997). Calcutta environmental management strategy and action plan - CEMSAP Appendix A: Strengthening institution and resources strategy. GOWB.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWest Bengal Government of, Department of Environment. Calcutta Environmental Management Strategy and Action Plan - CEMSAP Appendix A: Strengthening Institution and Resources Strategy. GOWB, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWest Bengal Government of, Department of Environment. Calcutta Environmental Management Strategy and Action Plan - CEMSAP Appendix A: Strengthening Institution and Resources Strategy. GOWB, 1997.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.