Bahadar, Khalida, Madiha Zaynab, Ali Noman, and Mahapara Fatima. 2018. “Morphological, Anatomical and Palynological Investigation of Plantago Cordata Lam. (Plantaginaceae) from Pakistan”. PSM Biological Research 3 (1), 29-33. https://journals.psmpublishers.org/index.php/biolres/article/view/161.