Daengsubha, Suwatana, Nuntiporn Boonsieng, Pornrat Yenjai, Bundit Anuyahong, and Wipanee Pengnate. 2021. “Needs of Japanese Language Proficiency Perceived by Multinational Organization Employees”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 59 (1):1-7. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12709.