Saragih, J. R., Ramadhan, M., Nainggolan, A. B. D. and Pandia, N. B. (2025) “The Influence of Promotion and Service Quality on Customers’ Decisions to Save at PT Bank Negara Indonesia, Balige Branch”, Economic: Journal Economic and Business, 4(4), pp. 829–837. doi: 10.56495/ejeb.v4i4.1348.