Santosa, F.A. and Rosid, M.A. 2022. Design of a Web-Based Letter Submission Application at the Faculty of Science and Technology, University of Muhammadiyah Sidoarjo : Rancang bangun Aplikasi Pengajuan Surat Berbasis Web Pada Fakultas Sains Dan Teknologi Universitas Muhammadiyah Sidoarjo. Procedia of Engineering and Life Science. 2, 2 (Jun. 2022). DOI:https://doi.org/10.21070/pels.v2i2.1218.