Sharma, R. K. L. J. R. S. S. (2000). Influence of variability and association on essential oil content of German chamomile (Chamomilla recutita (L.) Rauschert). Journal of Spices and Aromatic Crops, 9(2), 123–128. Retrieved from https://updatepublishing.com/journal/index.php/josac/article/view/4656