V. Sinpipat, W. Greethong, and P. Chularut, “The Effect of Performance on Creative Dramatic Activities of Winifred Ward and Brian Way Towards Nonassertive Behavior of Mathayomsuksa 6 Students at Wat Song-Tam School in Phrapradaeng District, Samutrakarn Provice ผลของการฝึกกิจกรรมละครสร้างสรรค์ตามแนวคิด”, J. Beh Sci f Dev, vol. 5, no. 1, Jan. 2013.