Saputra, Suroto Hadi. “9-Methoxy-1,3-Dimethyl-3,4-Dihydro-1h-Benzol [G] Isochromene-5,10-Dione Dari Umbi Bawang Tiwai (Eleutherine Americana L. Merr)”. Proceeding of Mulawarman Pharmaceuticals Conferences, vol. 3, no. 2, Apr. 2016, pp. 64-69, doi:10.25026/mpc.v3i2.89.