R. Riduan, “EVALUASI SISTEM DRAINASE PERUMAHAN DI DESA TIRTASARI KECAMATAN TOILI KABUPATEN BANGGAI: EVALUATION OF THE HOUSING DRAINAGE SYSTEM IN TIRTASARI VILLAGE TOILI SUBDISTRICT, BANGGAI REGENCY”, siparstika, vol. 1, no. 2, pp. 58–66, May 2022.