P. B. Kadilikansimba and D. P. Mapuga, “Phonological constraints on English speech production among Kiswahili-speaking learners in Tanzanian technical education: A systematic review”, Afr. Quarterly S.S. Review, vol. 3, no. 2, pp. 431–440, May 2026, doi: 10.51867/AQSSR.3.2.38.