SITANGGANG D, SIREGAR E. ANALISIS PENGENDALIAN KUALITAS PRODUK PADA PT. TOBA PULP LESTARI, TBK. JRAK [Internet]. 2019Oct.15 [cited 2024Nov.23];5(1):25-48. Available from: https://ejournal.ust.ac.id/index.php/JRAK/article/view/537