APA
(1986). Energ Environment in Agriculture A Study of Developed and Developing Systems. New Delhi: Punjabi.
Chicago
1986. Energ Environment in Agriculture A Study of Developed and Developing Systems. New Delhi: Punjabi.
Harvard
(1986). Energ Environment in Agriculture A Study of Developed and Developing Systems. New Delhi: Punjabi.
MLA
Energ Environment in Agriculture A Study of Developed and Developing Systems. New Delhi: Punjabi. 1986.