Thakur, T., R. Dadsena, S. B. Nandeshwar, and A. Kumar. “In Vitro Study of Callus Induction in Wedelia Trilobata Using Different Growth Regulators”. Plant Tissue Culture and Biotechnology, vol. 21, no. 1, Jan. 2012, pp. 95-99, doi:10.3329/ptcb.v21i1.9614.