R. W. Purwaningsih, E. Y. . Arvianti, C. . Sasmito, and W. P. . Lestari, “IMPACT ANALYSIS OF THE IMPLEMENTATION OF MALANG MAYOR’S CIRCULAR LETTER NUMBER 8 OF 2021 IN THE CONTEXT OF COMBATING MICROPLASTIC EMISSIONS IN MALANG CITY”, JPAP, vol. 11, no. 02, pp. 201–210, Oct. 2025.