Sirait, Ririn Eka Sasnita, Anggiat Maruli Siahaan, Paskah Ria Sitorus, and Lamtiur Lidia Gultom. 2025. “The Effect of Product Quality, Product Innovation, Capital and Marketing Strategy on the Development of MSMEs in Simalungun Regency Trade”. International Journal of Economics Development Research (IJEDR) 6 (4):1833-46. https://doi.org/10.37385/ijedr.v6i4.8424.