EKOWATIH., ACHMADA., PRASASTIE., WASITOH., SRIK., HIDAYATIZ. and EKASARIT. (1) “Zingiber officinale, Piper retrofractum and Combination Induced Apoptosis and p53 Expression in Myeloma and WiDr Cell Lines”, HAYATI Journal of Biosciences, 19(3), p. 137. doi: 10.4308/hjb.19.3.137.