Ely Julianus Tiballa, Bambang Karnain, Sugiharto Sugiharto, Achmad Daengs GS, Harsono Teguh. Pengaruh Kualitas Produk, Harga Dan Promosi Speaker Box Rhyme Terhadap Volume Penjualan Pada CV. Sinar Baja Eletric Di Surabaya Ely . JUMMA45 [Internet]. 2023 Sep. 14 [cited 2025 Apr. 19];2(2):294-311. Available from: https://jurnaluniv45sby.ac.id/index.php/JUMMA45/article/view/1631