A. P. Lestari, Y. Yudi, and Y. Yuliusman, “THE EFFECT OF PRODUCTION COSTS, OPERATIONAL COSTS, AND SALES ON NET PROFIT IN BASIC AND CHEMICAL INDUSTRY SECTOR COMPANIES LISTED ON THE INDONESIA STOCK EXCHANGE 2020-2024”, JAR, vol. 6, no. 2, pp. 56–81, Jan. 2026.