Ningrum, Harnum Rukmana, et al. “Application of the Sandpaper Letters Assistants Jigsaw Model to Improve Latin Writing Skills in Class I SD Negeri Danupayan Distric Temanggung”. Urecol Journal. Part A: Education and Training, vol. 2, no. 2, Dec. 2022, pp. 75-84, doi:10.53017/ujet.197.