http://www.thapra.lib.su.ac.th/thesis/showthesis_th.asp?id=0000012084
http://www.thapra.lib.su.ac.th/thesis/showthesis_th.asp?id=0000012084
Nakhon Pathom Rajabhat University
Thidarat Suebyart
Nakhon Pathom Rajabhat University 85 Malaiman Road, Muang, Nakhon Pathom 73000 Thailand
Tel : 0-3426-1021-36 to 746 Fax : 0-3426-1066 E-mail : chanokchone@npru.ac.th