หาญศึก ว., and ลิบลับ ไ. “ATTITUDE AND IDEA TO BUSINESS JAPANESE PROFICIENCY TEST (BJT) IN THAILAND”. Academic Journal Phranakhon Rajabhat University, vol. 10, no. 2, July 2019, pp. 117-30, https://so01.tci-thaijo.org/index.php/AJPU/article/view/182248.