Puspitoningrum, Encil. 2020. “Analisis Permasalahan Pada Kebutuhan Belajar Keterampilan Menulis Makalah Mahasiswa Melalui Model Jigsaw Di Era Digital (Kajian Awal Lesson Study): Analysis of Problems in the Learning Needs of Writing Paper Skills for Students Through the Jigsaw Model in the Digital Era (Preliminary Study of Lesson Study)”. Wacana : Jurnal Bahasa, Seni, Dan Pengajaran 4 (1):1-11. https://doi.org/10.29407/jbsp.v4i1.17659.