Osisanwo, I. A., & Afolahan, A. (2018). Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University.
Chicago-referens (17:e uppl.)Osisanwo, Isaac Adewale, och Adebisi Afolahan. Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University, 2018.
MLA-referens (9:e uppl.)Osisanwo, Isaac Adewale, och Adebisi Afolahan. Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University, 2018.
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