Ramadhan, Muhamad Fickri, . Erfiani, and Farit Mochammad Afendi. “Eksplorasi Data Hasil Survei Persepsi Terhadap Rektor Dengan Metode Quota Sampling”. Xplore: Journal of Statistics 7, no. 3 (August 12, 2018): 20–27. Accessed May 5, 2024. http://journal.stats.id/index.php/xplore/article/view/116.