Anuraga, Gangga, et al. “Pelatihan Pengujian Hipotesis Statistika Dasar Dengan Software R”. BUDIMAS : JURNAL PENGABDIAN MASYARAKAT, vol. 3, no. 2, July 2021, pp. 327-34, https://www.jurnal.stie-aas.ac.id/index.php/JAIM/article/view/2412.