Ayafor, M. (2015). The grammar problem in higher education in Cameroon: Assessing written standard english among undergraduates of the department of English at the University of Yaounde 1. Cambridge Scholars Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ayafor, Miriam. The Grammar Problem in Higher Education in Cameroon: Assessing Written Standard English Among Undergraduates of the Department of English at the University of Yaounde 1. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2015.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ayafor, Miriam. The Grammar Problem in Higher Education in Cameroon: Assessing Written Standard English Among Undergraduates of the Department of English at the University of Yaounde 1. Cambridge Scholars Publishing, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.