Singh, M. P. B. R. M. P. S. G. “Influence of Varieties, Sheep Manure and Nitrogen on Yield of Cumin (Cuminum Cyminum L.)”. Journal of Spices and Aromatic Crops, vol. 13, no. 2, Dec. 2004, pp. 126-8, https://updatepublishing.com/journal/index.php/josac/article/view/4799.