“Recommendation of Yogyakarta tourism based on simple additive weighting under fuzziness”. Journal of Soft Computing Exploration 2, no. 1 (मार्च 31, 2021): 6–10. अंतिम उपयोग अगस्त 26, 2026. https://shmpublisher.com/index.php/joscex/article/view/13.