Huynh, A. T., & Nguyen, T. H. H. (2025). FACTORS AFFECTING THE OPERATION OF PROFESSIONAL LEARNING COMMUNITIES OF ENGLISH AS A FOREIGN LANGUAGE TEACHERS AT VIETNAMESE ECONOMICS UNIVERSITIES. VNU Journal of Foreign Studies, 41(1), 166-185. https://doi.org/10.63023/2525-2445/jfs.ulis.5349