Syafitri, S.; Dinata, A.; Asteriani, F. Kinerja Pelayanan Dan Operasional PDAM Tirta Kampar Terhadap Kebutuhan Air Bersih Kota Bangkinang, Provinsi Riau: Service And Operational Performance PDAM Tirta Kampar Needs To Clean Water. SAINTIS 2015, 15, 9-19.