M. W. Kinyanjui, P. J. Aloka, S. K. Mutisya, F. N. Ndeke, and N. M. Nyang’ara, “Classroom Instruction Reinforcement Strategies and Factors that Influence their Implementation in Kenyan Primary Schools”, JESR, vol. 5, no. 3, p. 267, Sep. 2015, Accessed: Sep. 13, 2026. [Online]. Available: https://www.richtmann.org/journal/index.php/jesr/article/view/7727