Abu Bakar, H. A. ., Ahmad, A. H. . ., Osman, S. A. . . and Osman, S. A. (2025) “ Enhancing Manufacturing Productivity through Refined Work-Study Techniques: A Critical Review of Allowance Factors in Time Study”, Journal of Advanced Research Design, 142(1), pp. 177–195. doi: 10.37934/ard.142.1.177195.