APA
                B. Somashekar, G.v. Havanagi Department of Agronomy, . (1987). Performance of sunflower (Helianthus annuus L.) genotypes in relation to sowing dates and plant population levels during rabi se. Bangalore: University of Agricultural Sciences, Bangalore.
                
                Chicago
                B. Somashekar, G.v. Havanagi Department of Agronomy, . 1987. Performance of sunflower (Helianthus annuus L.) genotypes in relation to sowing dates and plant population levels during rabi se. Bangalore: University of Agricultural Sciences, Bangalore.
                
                Harvard
                B. Somashekar, G.v. Havanagi Department of Agronomy, . (1987). Performance of sunflower (Helianthus annuus L.) genotypes in relation to sowing dates and plant population levels during rabi se. Bangalore: University of Agricultural Sciences, Bangalore.
                
                MLA
                B. Somashekar, G.v. Havanagi Department of Agronomy, . Performance of sunflower (Helianthus annuus L.) genotypes in relation to sowing dates and plant population levels during rabi se. Bangalore: University of Agricultural Sciences, Bangalore. 1987.