Pittayaporn Sawetprom และ Pairote Bennui. (2023) A Study of English Listening and Speaking Problems of Tourist Assistants at Phuket International Airport. <i>Journal of Humanities and Social Sciences Mahasarakham University</i>, <i>42</i>(2), no. 302-315.Pittayaporn Sawetprom และ Pairote Bennui. "A Study of English Listening and Speaking Problems of Tourist Assistants at Phuket International Airport". Journal of Humanities and Social Sciences Mahasarakham University 42 (2023):no. 302-315.Pittayaporn Sawetprom และ Pairote Bennui. A Study of English Listening and Speaking Problems of Tourist Assistants at Phuket International Airport. Mahasarakham University:ม.ป.ท. 2023.