Analisis Pengembangan Strategi Pemasaran Koperasi Karyawan (KopKar) Untag Surabaya . JOURNAL OF RESEARCH AND TECHNOLOGY [Internet]. 2022 Aug. 9 [cited 2025 Jun. 29];8(1):15–28. Available from: https://journal.unusida.ac.id/index.php/jrt/article/view/628