KUMAR, RAKESH, et al. “Genetic Variability and Diversity Studies in Snapdragon (Antirrhinum Majus) under Tarai Conditions of Uttarakhand”. The Indian Journal of Agricultural Sciences, vol. 82, no. 6, June 2012, pp. 535–7, https://doi.org/10.56093/ijas.v82i6.19024.