Phaetlakfa, K. “A Comparative Study of the Spatial Ability Achievement of Early Childhood Children Between Pre and Post Learning by Creative Arts Instructional Package for Develop Spatial Activities”. Fine Arts Journal: Srinakharinwirot University, vol. 13, no. 2, Oct. 2011, pp. 47-53, https://so01.tci-thaijo.org/index.php/jfofa/article/view/93044.