Musigapong, P., C. Tripan, S. . Srikaew, S. . Ariyaphuchai, A. . Rukkaphan, C. . Kittipaisal, and S. . Sungnoi. “Botanical Characteristics for Traditional Robusta Coffee in Lower Southern Region, Thailand”. Songklanakarin Journal of Plant Science, vol. 9, no. 2, Dec. 2022, pp. 73-84, https://www.sjplantscience.com/index.php/ojs/article/view/66.