Praserd Sawaddemongkol และผู้แต่งคนอื่นๆ. (2016) Examination of Problems Facing Educational Management of Private Kindergarten Schools in Samutprakan, Thailand. Rangsit University:ม.ป.ท.Praserd Sawaddemongkol และผู้แต่งคนอื่นๆ. 2016. Examination of Problems Facing Educational Management of Private Kindergarten Schools in Samutprakan, Thailand. ม.ป.ท.:Rangsit University;Praserd Sawaddemongkol และผู้แต่งคนอื่นๆ. Examination of Problems Facing Educational Management of Private Kindergarten Schools in Samutprakan, Thailand. ม.ป.ท.:Rangsit University, 2016. Print.