1. Allen SE, Grimshaw HM, Rowland AP (1986) Chemical analysis. In P. D. Moore, & S.B. Chapman (Eds.), Methods in Plant Ecology (pp. 285-344). London: Blackwell, Scientific Publication, Oxford.
2. Awashthi SK (Ed.) (2000). Prevention of Food Adulteration Act No. 37 of 1954. Central and State Rules as Amended for 1999, Ashoka Law House, New Delhi.
3. Genotoxic assessment and optimization of pressmud with the help of exotic earthworm Eisenia fetida;Bhat;Environmental Science and Pollution Research,2014
4. Bremner JM, Mulvaney CS (1982) Nitrogen total. In A. L. Page, R.H. Miller, & D. R. Keeney (Eds.), Methods of soil analysis (pp. 575-624). Madison, WI: Am. Soc. Agronomy.
5. Chief Editor Room of Standard Press of China (CERSPC) (2009) Compilation of Standards for Feed Industry (in Chinese). Beijing: Standard Press of China.