1. Dubey AN. Alternative sources of energy. Employment News, Weekly, New Delhi, 2–8 May 1998
2. Indian Standard––Family Size Biogas Plant. Code of Practice. Bureau of Indian Standards, New Delhi, 1991
3. Biogas technology;Duggal,1987
4. KVIC––A pamphlet on design details of biogas plant. Directorate of Biogas, Khadi and Village Industries Commission, Bombay
5. KVIC––A pamphlet on gobar gas––why and how. Directorate of Biogas, Khadi and Village Industries Commission, Bombay