Setianingsih, Rofiqoh, et al. “Formation of Regional and National Song Choirs As a Means of Strengthening National Identity for Students of Sanggar Guidance Permai, Pinang Malaysia”. Journal of Community Services and Engagement: Voice of Community (VOC), vol. 4, no. 1, Apr. 2024, pp. 15-21, doi:10.23917/voc.v4i1.5418.