Siagian, Marvic Davis Logan. “Pengaruh Inovasi Layanan Vending Machine Terhadap Persepsi Konsumen Tentang Keunggulan Bersaing Produk Makanan Kue ‘Artirasa’ Di Wilayah Jakarta”. Management Studies and Entrepreneurship Journal (MSEJ) 7, no. 3 (February 15, 2026): 2236–2251. Accessed February 16, 2026. https://journal.yrpipku.com/index.php/msej/article/view/10467.