Παραπομπή σε μορφή APA (7η εκδ.)

Osisanwo, I. A., & Afolahan, A. (2018). Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Osisanwo, Isaac Adewale, και Adebisi Afolahan. Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University, 2018.

Παραπομπή σε μορφή MLA (9th εκδ.)

Osisanwo, Isaac Adewale, και Adebisi Afolahan. Register Range in the West African School Certificate English Language Examination (1974-1983). Obafemi Awolowo University, 2018.