Wairimu, Rosepaulah, and Dr. Beth Njeri Ngugi. “An Analysis of Prepositional Related Errors in English Composition of Upper Primary Learners in Kieni East Sub County in Nyeri County”. International Journal of English Literature and Social Sciences (IJELS) 6, no. 5 (September 23, 2021). Accessed August 25, 2024. https://journal-repository.com/index.php/ijels/article/view/4104.