PURNOMO, Agus. KAJIAN VISUAL DESAIN SAMPUL NOVEL “FILOSOFI KOPI”. JURNAL KEMADHA, [S. l.], v. 7, n. 2, 2017. Disponível em: https://jurnal.usahidsolo.ac.id/index.php/kmd/article/view/166. Acesso em: 12 aug. 2026.