Lianzi, Luo, Nayos Sartjinpong, and Pakorn Rodchangphuen. “A Study the Hakka Folk Song for Writing Hakka Folk Songs Vocal Guidebook”. Journal of Modern Learning Development 9, no. 12 (December 30, 2024): 503–515. accessed October 12, 2026. https://so06.tci-thaijo.org/index.php/jomld/article/view/275631.