Pratiwi, M.P., Argarini, R. and Sudarno, S. 2014. Red Dragon Fruit Extract (Hylocereus polyrhizus) Restores Learning Ability and Memory on Test Animals Post Lead Exposure: Experimental Study on Test Animals. ANIMA Indonesian Psychological Journal. 30, 1 (Oct. 2014), 57-63. DOI:https://doi.org/10.24123/aipj.v30i1.535.