YASRI, D.; SETIANI, Y.; FEBRIYANTO, F. Analisis Willingness To Pay (WTP) Dalam Memenuhi Kebutuhan Air Di Kecamatan Bangkinang. SAINSTEK, [S. l.], v. 6, n. 2, p. 23–28, 2018. Disponível em: https://ejournal.sttp-yds.ac.id/index.php/js/article/view/74. Acesso em: 24 feb. 2026.