Preydes Xaviera Sitorus, Septa Yohana Lubis, and Yohana Yulia Purba. “Uji Trend Cox-Stuart Pada Kunjungan Wisatawan Di Tapanuli Tengah Tahun 2023”. Interdisciplinary Explorations in Research Journal, vol. 2, no. 3, Dec. 2024, pp. 1793-05, https://mail.shariajournal.com/index.php/IERJ/article/view/791.