Varongsakdi Tangpakom และ Withaya Sucharithanarugse. (2010) Attitude toward usage of Patani Malay language in three Southern border provinces. Chulalongkorn University:ม.ป.ท.Varongsakdi Tangpakom และ Withaya Sucharithanarugse. 2010. Attitude toward usage of Patani Malay language in three Southern border provinces. ม.ป.ท.:Chulalongkorn University;Varongsakdi Tangpakom และ Withaya Sucharithanarugse. Attitude toward usage of Patani Malay language in three Southern border provinces. ม.ป.ท.:Chulalongkorn University, 2010. Print.