Purnamawati, Ami. “Event Management Praktik Lapang Mahasiswa Universitas Koperasi Indonesia Di Daerah Istimewa Yogyakarta”. E-Coops-Day 4, no. 2 (August 9, 2023): 307–314. Accessed November 23, 2024. https://journal.ikopin.ac.id/index.php/ecoopsday/article/view/3632.