Não informado. West African journal of education. University of Ibadan, Institute of Education.
Chicago-Zitierstil (17. Ausg.)Não informado. West African Journal of Education. Ibadan, Nigeria: University of Ibadan, Institute of Education.
MLA-Zitierstil (8. Ausg.)Não informado. West African Journal of Education. University of Ibadan, Institute of Education.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.