APA
Saranya Savetamalya, . (1999). Language change : its characteristics and motivating force. Chiang Mai: Department of English, Chiangmai Univ.
Chicago
Saranya Savetamalya, . 1999. Language change : its characteristics and motivating force. Chiang Mai: Department of English, Chiangmai Univ.
Harvard
Saranya Savetamalya, . (1999). Language change : its characteristics and motivating force. Chiang Mai: Department of English, Chiangmai Univ.
MLA
Saranya Savetamalya, . Language change : its characteristics and motivating force. Chiang Mai: Department of English, Chiangmai Univ. 1999.