L Bahadur, S K Tewari, D Singh, R C Nainwal,. “Integrated Nutrient Management in Calendula (Calendula Officinalis L.) Grown in Partially Reclaimed Sodic Soil Condition”. Journal of Spices and Aromatic Crops 24, no. 2 (December 24, 2015): 129–132. Accessed April 30, 2024. https://updatepublishing.com/journal/index.php/josac/article/view/5105.