Halimatus Fatmasari, N. ., Zuhro, D., Sutini, S., Rachmawati, A., & Daeng GS, A. (2026). DIFFERENTIAL COST ANALYSIS IN THE DECISION TO MAINTAIN OR DISCONTINUE A PRODUCT. (Case Study at PT. Modern Keramik Jaya in Surabaya) . Journal of Managerial Sciences and Studies, 4(2), 1440–1457. https://doi.org/10.61160/jomss.v4i2.133