مقالة · مجلة · 2021
K.U Ozioko, Chris Ikem Okoye, Patience Obiageli Ubachukwu, Raymond Awudu Agbu, Bede Izuchukwu Ezewudo, C. S. Ezea
Bulletin of the National Research Centre/Bulletin of the National Research Center
كما طُبع: Kingsley Uchenna Ozioko
كما طُبع: Celestine Osita Ezea