APA
Challa J., Joshi P. & Virmani S. (2010). Coservation Agriculture :Innovations for Improving Efficiency, Equity and Environment. New Delhi: National Academy of Agricultural Science.
Chicago
Challa J, Joshi P.K and Virmani S.M. 2010. Coservation Agriculture :Innovations for Improving Efficiency, Equity and Environment. New Delhi: National Academy of Agricultural Science.
Harvard
Challa J., Joshi P. and Virmani S. (2010). Coservation Agriculture :Innovations for Improving Efficiency, Equity and Environment. New Delhi: National Academy of Agricultural Science.
MLA
Challa J, Joshi P.K and Virmani S.M. Coservation Agriculture :Innovations for Improving Efficiency, Equity and Environment. New Delhi: National Academy of Agricultural Science. 2010.
