Ngala, Kimora U. M., Wilfried S. Manoppo, and Joanne V. Mangindaan. 2020. “Analisis Laporan Arus Kas Pada PT. United Tractors, Tbk”. Productivity 1 (4):301-5. https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/29883.