Caga, J., D. Lazuardi, I. R. Situmorang, E. Nainggolan, and I. Gustina. “The Effect of Word-of-Mouth (WOM) and Atmosphere on Competitive Advantage at Rumah Makan Rasa Leluhur, Medan City”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE), Vol. 9, no. 2, July 2026, pp. 17062-73, https://e-journal.uac.ac.id/index.php/iijse/article/view/10203.