Krualee, S., K. sukkai, W. Rattanasupha, and T. Puttakan. “Effect of Fruit Age on Harvesting Quality of Aromatic Coconut”. Rajamangala University of Technology Srivijaya Research Journal, vol. 13, no. 3, Nov. 2021, pp. 637-46, https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/242459.