à¹€à¸™à¸•à¸£à¸žà¸¥à¸±à¸š, à., & à¹€à¸›à¸£à¸¡à¸²à¸™à¸™à¸—à¹Œ, à. 2016 Aug 8. à¸™à¸²à¸à¸¢à¸¨à¸´à¸¥à¸›à¹Œà¸žà¸·à¹‰à¸™à¹€à¸¡à¸·à¸à¸‡à¸¡à¸¥à¸²à¸¢à¸¹à¸›à¸²à¸•à¸²à¸™à¸µ. à¸§à¸²à¸£à¸ªà¸²à¸£à¸§à¸´à¸—à¸¢à¸šà¸£à¸´à¸à¸²à¸£ à¸¡à¸«à¸²à¸§à¸´à¸—à¸¢à¸²à¸¥à¸±à¸¢à¸ªà¸‡à¸‚à¸¥à¸²à¸™à¸„à¸£à¸´à¸™à¸—à¸£à¹Œ | Academic Services Journal, Prince of Songkla University. [Online] 27:2