Ardiningrum, L. A., and D. K. Ardiyani. “The Development of the Learning Management System-Based Übungtest Schreiben at Level A1 for Students of PASCH School SMAN 1 Malang”. Randwick International of Education and Linguistics Science Journal, Vol. 4, no. 3, Sept. 2023, pp. 639-51, doi:10.47175/rielsj.v4i3.762.