., Asrianny, Rinekso Soekmadi, Hadi Susilo Arifin, and Dudung Darusman. “The Importance-Performance Analysis of Ecotourism Subcomponents Based on Visitor Perspectives in Helena Sky Bridge”. Journal of Scientific Research and Reports 26, no. 4 (May 16, 2020): 29-38. Accessed June 7, 2020. http://journaljsrr.com/index.php/JSRR/article/view/30245.