Purwoko, B., M. A. Hadi, A. Gamal, and W. Prihartanti. “The Effect of Production Costs and Sales Volumes on Profits of Registered Food and Beverage Sub-Sector Manufacturing Companies on the Indonesia Stock Exchange for the 2018-2022 Period”. Enrichment : Journal of Management, Vol. 12, no. 3, Sept. 2022, pp. 2459-68, doi:10.35335/enrichment.v12i3.657.