Kowitcharoen, L., C. Wongs-Aree, S. Setha, R. Komkhuntod, S. Kondo, and V. Srilaong. “Pre-Harvest Drought Stress Treatment Improves Antioxidant Activity and Sugar Accumulation of Sugar Apple at Harvest and During Storage”. Agriculture and Natural Resources, vol. 52, no. 2, Apr. 2018, pp. 146-54, https://li01.tci-thaijo.org/index.php/anres/article/view/234223.