APA
                S.C. Prasanna Kumar, K.S. Krishnappa Department of Horticulture, . (2000). Effect of various levels of nitrogen, phosphorus and potassium on growth and yield ridge gourd [Luffa acutangula (L.) Roxb.]. Bangalore: University of Agricultural Sciences Bangalore.
                
                Chicago
                S.C. Prasanna Kumar, K.S. Krishnappa Department of Horticulture, . 2000. Effect of various levels of nitrogen, phosphorus and potassium on growth and yield ridge gourd [Luffa acutangula (L.) Roxb.]. Bangalore: University of Agricultural Sciences Bangalore.
                
                Harvard
                S.C. Prasanna Kumar, K.S. Krishnappa Department of Horticulture, . (2000). Effect of various levels of nitrogen, phosphorus and potassium on growth and yield ridge gourd [Luffa acutangula (L.) Roxb.]. Bangalore: University of Agricultural Sciences Bangalore.
                
                MLA
                S.C. Prasanna Kumar, K.S. Krishnappa Department of Horticulture, . Effect of various levels of nitrogen, phosphorus and potassium on growth and yield ridge gourd [Luffa acutangula (L.) Roxb.]. Bangalore: University of Agricultural Sciences Bangalore. 2000.