APA
                G. Dev, . (1992). Balanced fertilizer use for increasing foodgrains production in nothern state ( Punjab, Haryan, Uttar Pradesh, Himachal Pradesh. Gurgaon: Potash phosphate institute o f canada India programme.
                
                Chicago
                G. Dev, . 1992. Balanced fertilizer use for increasing foodgrains production in nothern state ( Punjab, Haryan, Uttar Pradesh, Himachal Pradesh. Gurgaon: Potash phosphate institute o f canada India programme.
                
                Harvard
                G. Dev, . (1992). Balanced fertilizer use for increasing foodgrains production in nothern state ( Punjab, Haryan, Uttar Pradesh, Himachal Pradesh. Gurgaon: Potash phosphate institute o f canada India programme.
                
                MLA
                G. Dev, . Balanced fertilizer use for increasing foodgrains production in nothern state ( Punjab, Haryan, Uttar Pradesh, Himachal Pradesh. Gurgaon: Potash phosphate institute o f canada India programme. 1992.