Hasibuan, M.; Sukmal, J.; Ritonga, N.; Budiman, S.; Munthe, S. The Influence of Product Quality and Prices on Customer Loyalty in The Tough Factory in Dusun I Panca Bakti, South Marbau Village, Marbau District, Labuhanbatu Utara District. M.Journal 2024, 1, 01-10.