Article · Revue · 2016
Harry Barton Essel, Patrick Osei-Poku, Akosua Tachie-Menson, Nana Afia Opoku-Asare
the Journal of Education and Practice, http://files. eric. ed. gov/fulltext/EJ1099557. pdf (diakses 25 September 2017)
tel qu’imprimé : HB Essel
tel qu’imprimé : P Osei-Poku
tel qu’imprimé : A Tachie-Menson
tel qu’imprimé : NA Opoku-Asare