Rasyidah, Rasyidah, Meri Azmi, and Widya Wicaksana. 2020. “A Web-Based Information System for Student Affairs Letter Management : Design and Implementation in Padang State Polytechnics”. MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering 2 (3), 51-68. https://doi.org/10.46574/motivection.v2i3.75.