Robert Tua Siregar, Hery Pandapotan Silitonga2 (2020) ā€œDevelopment Of Wastewater Treatment (IPAL) Communal Plant In Village Pardomuan Nauli In The District Laguboti District Toba Samosir With The Power Of Community Participationā€, International Journal of Advanced Science and Technology, 29(06), pp. 5672 - 5680. Available at: http://sersc.org/journals/index.php/IJAST/article/view/19841 (Accessed: 2May2024).