1. Department of Languages and Literature, University College of Education (DUCE), Dar es Salaam, Tanzania
2. Department of Biology, University College of Education (DUCE), Dar es Salaam, Tanzania
3. Department de français et langues africaines, Institut Supérieur Pédagogique de Kikwit, Kikwit, Democratic Republic of the Congo
4. Department of Languages and Cultures; UGent Centre for Bantu Studies (BantUGent), Ghent University, Gent, Belgium