Wirdianto, E., Rahman, A., & Milana, M. (2024). MUSIC-3D Approach and Kraljic’s Purchasing Portfolio Model in Determining PT Semen Padang’s Spare Parts Procurement Strategy. MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering, 6(2), 155-166. https://doi.org/10.46574/motivection.v6i2.326