SIREGARL. A. M., KENGC. L., and LIMB. P. “Effects of Medium Constituents on Growth and Canthinone Accumulation in Cell Suspension Cultures of Eurycoma Longifolia Jack”. HAYATI Journal of Biosciences, Vol. 16, no. 2, 1, p. 69, doi:10.4308/hjb.16.2.69.