Weeranakin, Natirath. 2023. “The Effectiveness of a Learning Package Development Using the Participatory Design of Sufficiency Economy for Students in KhonKaen School for the Blind”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 17 (2):833-41. https://doi.org/10.14456/psruhss.2023.59.