S. Manik, P. Sagala, and F. Dhuha, “MORPHOLOGICAL ERROR ANALYSIS ON WORD CLASSES FOUND IN STUDENTS’ DESCRIPTIVE WRITING OF THE FIFTH SEMESTER ENGLISH DEPARTMENT AT NOMMENSEN HKBP UNIVERSITY (NHU) MEDAN”, PENDIDIK, vol. 7, no. 1, pp. 42–55, Jul. 2022.