Kurniawan, Ignatius Soni. “Factors Affecting Decision to Have Vacation on Sri Gethuk Waterfall Gunungkidul”. JSSH (Jurnal Sains Sosial dan Humaniora) 3, no. 2 (November 15, 2019): 141–148. Accessed June 17, 2025. http://jurnalnasional.ump.ac.id/index.php/JSSH/article/view/5000.