Design and Usability Evaluation of an Android-Based Point of Sales Application Using Goal-Directed Design. Jurnal Sistem Cerdas, [S. l.], v. 9, n. 1, p. 131–143, 2026. DOI: 10.37396/jsc.v9i1.660. Disponível em: https://apic.id/jurnal/index.php/jsc/article/view/660. Acesso em: 13 nov. 2026.