Pandey, Y. R., C. Sagwansupyakorn, O. Sahavacharin, and N. Thaveechai. “Effect of Planting Material on Growth and Seed Rhizome Yield of Ginger (Zingiber officinale Roscoe)”. Agriculture and Natural Resources, vol. 31, no. 4, Dec. 1997, pp. 445-51, https://li01.tci-thaijo.org/index.php/anres/article/view/241007.