Sommart, A. and Pusitrattanavalee, S. 2025. The Participatory Administration Affecting the Efficiency of School in Koh Samui Management under Suratthani Primary Educational Service Area Office 1: The Participatory Administration Affecting the Efficiency of School in Koh Samui Management under Suratthani Primary Educational Service Area Office 1. RATANABUTH JOURNAL. 7, 2 (Aug. 2025), 115–125.