et. al., Riski Taufik Hidayah,. “The Increasing Intention Of Tourist Loyalty Through Geopark Destination Attributes (The Research of Ciletuh-Palabuhanratu Geopark Visitors)”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 8, Apr. 2021, pp. 316-21, https://www.turcomat.org/index.php/turkbilmat/article/view/2802.