Singh, H.K, V.B Singh, Randhir Kumar, D.K. Baranwal, and P.K. Ray. 2014. “Assessment of Genetic Diversity Based on Cluster and Principal Component Analyses for Yield and Its Contributing Characters in Bitter Gourd”. Indian Journal of Horticulture 71 (01):55-60. https://journal.iahs.org.in/index.php/ijh/article/view/1352.