et. al., Khacheenuj Chaovanapricha,. “Development of Learning Achievement in English for Marketing Subject by Using Project Work “B.E. Hometown Products Fair"”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 8, Apr. 2021, pp. 2320-5, https://www.turcomat.org/index.php/turkbilmat/article/view/3513.