Reza, Faizal, Catur Kumala Dewi, and Eka Yudhyani. “STATISTIKA DESKRIPTIF UNTUK EKONOMI & BISNIS”. Penerbit Tahta Media (June 15, 2021). Accessed April 29, 2026. https://tahtamedia.co.id/index.php/issj/article/view/52.