ANALISIS PENENTUAN KARAKTERISTIK KUALITAS PRODUK PROTECTOR DI PT. CITRA TUBINDO TBK. comasiejournal [Internet]. 2021 Jan. 25 [cited 2026 Oct. 6];4(5):62-7. Available from: https://ejournal.upbatam.ac.id/index.php/comasiejournal/article/view/3484