Profil kesalahan dalam produksi tulisan mahasiswa program studi bahasa Indonesia di Tokyo University of foreign studies = Errors in writing production of Indonesian study program students in Tokyo University of foreign studies

Analisis kesalahan ortografis bahasa Jerman pada karangan mahasiswa program studi Jerman Universitas Indonesia angkatan 2011/2012 = Analysis of German orthographic errors found at the writing examination papers of German studies students of the University of Indonesia of the academic year of 2011/2012

Korelasi penguasaan dan kesalahan pelafalan verba lampau oleh mahasiswa program studi inggris penutur bahasa jawa = Correlation between past verbs speech proficiency and errors of javanese speaking english department students

An analysis of the lexical errors in translating English text into Bahasa Indonesia done by the students of English Department University of HKBP Nommensen Medan

Analisis kesalahan sintaksis karangan bahasa Inggris mahasiswa FKIP Universitas HKBP Nommensen Pematang Siantar