Gustany, Eko Widodo, et al. “Analysis of Quality Control of 800ml Lubricant Bottle Leaks With Seven Tools Method at PT. EFG”. Jurnal Teknik Industri Terintegrasi (JUTIN), vol. 6, no. 4, Oct. 2023, pp. 1260-71, doi:10.31004/jutin.v6i4.20388.