Irungu, Mwangi Newton, Nyagah Grace, and Mugambi Mercy. “Learners’ Written Interaction Effect on Learners’ Academic Achievement in Chemistry”. Advances in Social Sciences Research Journal 6, no. 8 (August 25, 2019): 306–318. Accessed December 7, 2025. https://www.journals.scholarpublishing.org/index.php/ASSRJ/article/view/6923.