Purnomo, Yudi, and Agustiah Wulandari. 2025. “A Geoprocessing Approach Using Poi Visibility Index for Identifying Potential Routes in Designing Sustainable Tourism Development: The Case Study of Singkawang, Indonesia”. JURNAL GEOGRAFI 17 (2):223-34. https://doi.org/10.24114/jg.v17i2.64723.