Rahayu, Astiti, Triani Hardiyati, and Ponendi Hidayat. “Effect of Polyethylene Glycol 6000 and Storage Period on Seed Quality of Cocoa (Theobroma Cacao L.)”. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 30, no. 1 (May 1, 2014). Accessed October 24, 2020. https://www.ccrjournal.com/index.php/ccrj/article/view/193.