Khidhir, et al. “Framework Fenomenografi Untuk Requirements Engineering Pendekatan Categories of Requirements Description (CoRD)”. SEMNASTIK - APTIKOM 2025, vol. 1, no. 1, Dec. 2025, pp. 11-19, https://ojssemnastik2025.aptikomlampung.id/index.php/semnastik2025/article/view/19.