Zein Ramadhan Rifa’I, M, and Muhamad Zen. “Strategi Marketing Mix Dalam Menghadapi Persaingan Pasar : Studi Kasus Pada PT. Zamzam Sumbula Thoyyiba Tangerang Selatan”. Journal of Islamic Management 1, no. 2 (July 8, 2021): 148–162. Accessed February 22, 2026. https://jurnalfdk.uinsa.ac.id/index.php/JIM/article/view/557.