Rather, Z.A, et al. “In Vitro Propagation of Herbaceous Peony (Paeonia Lactiflora Pall.) Cv. Sara Bernhardt Using Shoot Tips”. Indian Journal of Horticulture, vol. 71, no. 03, Sept. 2014, pp. 385-9, https://journal.iahs.org.in/index.php/ijh/article/view/1298.