ASAKIT, B., and S. . Tanjana. “Chord Tone : The Basis for Practice Electric Guitar in the Jazz Blues Style”. Journal of Humanities and Social Sciences Suratthani Rajabhat University, vol. 11, no. 2, Aug. 2019, pp. 247-72, https://so03.tci-thaijo.org/index.php/jhsc/article/view/196236.