Sarjono, Sarjono, Muhamad Gofur, Ades Yulia Apriani, and Dafid Mega Saputra. 2023. “Analysis of Worker’s Age and Working Time on the Influence of Productivity With Multiple Linear Regression Methods (Case Study of Automotive Spare Parts Manufacturing Company)”. IJIEM - Indonesian Journal of Industrial Engineering and Management 4 (2). Jakarta, Indonesia:157-63. https://doi.org/10.22441/ijiem.v4i2.20019.