Zasari, M., A. Susuilo, A. Wachjar, and S. Sudarsono. “Determination of Criteria and Drought Tolerance of Prope-Legitimate Cocoa Seed Through Polyethylene Glycol Induction”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 36, no. 2, Aug. 2020, pp. 120-3, doi:10.22302/iccri.jur.pelitaperkebunan.v36i2.435.