Sasongko, S. D. Analisis Kesalahan Bahasa Pada Proposal Kegiatan Mahasiswa UN PGRI Kediri 2016-2017: Analysis of Language Errors in the UN PGRI Kediri Student Activity Proposal 2016-2017. Jubasan 2018, 2 (1), 29-34. https://doi.org/10.29407/jbsp.v2i1.12742.