Nainggolan, E., Cecilia, and Sri Rezeki. “Keys to Business Performance: Improving Product Quality and Implementing Total Quality Management in Manufacturing”. Jurnal Manajemen Bisnis Eka Prasetya Penelitian Ilmu Manajemen, Vol. 10, no. 2, Sept. 2024, pp. 481-92, doi:10.47663/jmbep.v10i2.477.