APA
                H Bharathkumar, R Krishna Horticulture, . (1979). Studies on seed germination, growth characters, root yield and alkaloid content in genotypes of Catharanthus roseus (L.) G Don. Bangalore: University of Agricultural Sciences, Bangalore.
                
                Chicago
                H Bharathkumar, R Krishna Horticulture, . 1979. Studies on seed germination, growth characters, root yield and alkaloid content in genotypes of Catharanthus roseus (L.) G Don. Bangalore: University of Agricultural Sciences, Bangalore.
                
                Harvard
                H Bharathkumar, R Krishna Horticulture, . (1979). Studies on seed germination, growth characters, root yield and alkaloid content in genotypes of Catharanthus roseus (L.) G Don. Bangalore: University of Agricultural Sciences, Bangalore.
                
                MLA
                H Bharathkumar, R Krishna Horticulture, . Studies on seed germination, growth characters, root yield and alkaloid content in genotypes of Catharanthus roseus (L.) G Don. Bangalore: University of Agricultural Sciences, Bangalore. 1979.