Samattaphong Khajohnmanee และ Sudarat Tuntivivat. (2023) The Causal Relationship Model of Work Passion Among Community Development Volunteers. <i>Journal of Community Development Research (Humanities and Social Sciences)</i>, <i>16</i>(1), 88-102.Samattaphong Khajohnmanee และ Sudarat Tuntivivat. "The Causal Relationship Model of Work Passion Among Community Development Volunteers". Journal of Community Development Research (Humanities and Social Sciences) 16 (2023):88-102.Samattaphong Khajohnmanee และ Sudarat Tuntivivat. The Causal Relationship Model of Work Passion Among Community Development Volunteers. Naresuan University Graduate School:ม.ป.ท. 2023.