Thanh Nguyen, Phong, Herman Herman, Quyen Le Hoang Thuy To Nguyen, I Wayan Suparta, y Vy Dang Bich Huynh. «Cleanliness Assessment of Sub-District in Regency Using Technique for Order Preference by Similarity to Ideal Solution». Opción 350 (junio 9, 2019): 2899-2921. Accedido enero 21, 2025. https://produccioncientificaluz.org/index.php/opcion/article/view/30142.