Porntikan Promphet. (2020) Internal Communications Management: A Case Study of Krung Thai Bank Public Company Limited Head Office and Branches in Three Southern Border Provinces of Thailand. <i>Humanities, Arts and Social Sciences Studies</i>, <i>20</i>(2), 541-559.Porntikan Promphet. "Internal Communications Management: A Case Study of Krung Thai Bank Public Company Limited Head Office and Branches in Three Southern Border Provinces of Thailand". Humanities, Arts and Social Sciences Studies 20 (2020):541-559.Porntikan Promphet. Internal Communications Management: A Case Study of Krung Thai Bank Public Company Limited Head Office and Branches in Three Southern Border Provinces of Thailand. Silpakorn University Research Innovation and Creativity Administration Office:ม.ป.ท. 2020.