مقالة · مجلة · 2021
Alphonce Bere, Godfrey H. Sithuba, Coster Mabvuu, Retang Mashabela, Caston Sigauke, Kwabena A. Kyei
South African Statistical Journal
اقرأه10.37920/sasj.2021.55.1.3
كما طُبع: Kwabena Kyei