SYAFARUDDIN, S.; BAHMANI-OSKOOEE, M.; TONY SOHDIN MARTUA SIMANJUNTAK, E.; SAMOSIR, W.; DELFAHEDAH, Y. STUDY OF CLEAN WATER DISTRIBUTION SERVICES FROM BAHSIKAM SPRINGS IN PDAM TIRTAULI, PEMATANGSIANTAR CITY. International Conference on Health Science, Green Economics, Educational Review and Technology, [S. l.], v. 2, p. 269–286, 2020. DOI: 10.54443/ihert.v2i.34. Disponível em: http://proceeding.unefaconference.org/index.php/IHERT/article/view/34. Acesso em: 5 jan. 2025.