Pandey, Y. R., Sagwansupyakorn, C., Sahavacharin, O., & Thaveechai, N. (1997). Effect of Planting Material on Growth and Seed Rhizome Yield of Ginger (Zingiber officinale Roscoe). Agriculture and Natural Resources, 31(4), 445–451. retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/241007