Rian Ramadhan, and Agusti Efi. “ Abstract Painting Art Study Yasrul Sami’s Expressionism ”. JHSS (Journal of Humanities and Social Studies) 10, no. 1 (May 6, 2026): 682–692. Accessed July 22, 2026. https://jhss-lppm-unpak.id/index.php/jhss/article/view/127.