Sinpipat V, Greethong W, Chularut P. 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 [internet]. 2013 Jan. 4 [cited 2026 Oct. 6];5(1). available from: https://so02.tci-thaijo.org/index.php/JBSD/article/view/4705