Natthaya Supateera และ Sasi Jungsatitkul. (2011) The development of computer-assisted musical pronunciation courseware for English suprasegmentals /. Khon Kaen University,:ม.ป.ท.Natthaya Supateera และ Sasi Jungsatitkul. 2011. The development of computer-assisted musical pronunciation courseware for English suprasegmentals /. ม.ป.ท.:Khon Kaen University,;Natthaya Supateera และ Sasi Jungsatitkul. The development of computer-assisted musical pronunciation courseware for English suprasegmentals /. ม.ป.ท.:Khon Kaen University, 2011. Print.