Permatasari, Agustia, & Seprida Hanum. " THE EFFECT OF PRODUCTION COSTS AND OPERATIONAL COSTS ON NET PROFIT ON METALS MANUFACTURING COMPANIES AND SOMETHING LISTED ON THE STOCK EXCHANGE INDONESIA (IDX) PERIOD 2013-2017." Proceedings Of The International Seminar [Online], 1.1 (2019): 194-200. Web. 22 Dec. 2024