Angelia Putriana; Siti Aisyah; Apriliani Lase; Sabam Syahputra; Aprilana Lase. Analisis Kebersihan Air Kamar Mandi Di Lingkungan Kampus 1 IAKN (Institut Agama Kristen Negeri) Tarutung. TOBA: Journal of Tourism, Hospitality, and Destination 2023, 2, 90-96.