Wong, K.F. and Taha, R.M. (2012) The effect of 2,4-dichlorophenoxyacetic acid and 6-benzylaminopurine on callus induction and plant regeneration of allamanda cathartica - a valuable medicinal plant. Research Journal of Biotechnology, 7 (3). pp. 75-80. ISSN 0973-6263,