Imelda V, Sunarmi. The Influence of production costs and sales volume on operational profit at Serasi Gorden Pringsewu: Case Study In Serasi Gorden’s Business In Pringsewu. enrichment [Internet]. 2023Jun.30 [cited 2026Jul.26];13(2):1505-11. Available from: https://enrichment.iocspublisher.org/index.php/enrichment/article/view/1404