1) NDAGIJIMANA J.B and J. NYIRAMUJINJA (2014), Teaching methodology of “group work” as technique of teaching learning. Case study of group work as teaching methods used in secondary school, Lap ISBN : 978-3-659-54918-2 1.
2)NDAGIJIMANA J.B. Contribution of group work as active learning methods to the performance of learners, in Research Journal of Education Vol. 4 | No. 8 August | 2016 ISSN 2347-8225
3) NDAGIJI MANA J.B. (2014), 2. NDAGIJI MANA J.B. (2014), Contribution of Teacher Training College to the Education For All process (EFA)in Rwanda, EUE ISBN : 978-3-8417-9782-7
4) NDAGIJI MANA J.B. (2014), The factors of the low motivation and their effects on the learning. Case of Teachers Training College(TTC) Students in Rwanda, Paf ISBN : 978-3-8381-8899-7