Manna Wassalwa, Hasny Delaila Siregar, Khairina Janani, and Irma Sari Harahap. “ANALISIS UJI HIPOTESIS PENELITIAN PERBANDINGAN MENGGUNAKAN STATISTIK PARAMETRIK”. Al Ittihadu, vol. 3, no. 1, Dec. 2023, pp. 67-79, https://jurnal.asrypersadaquality.com/index.php/alittihadu/article/view/124.