Khali, Z.K. and Rosli, R. 2021. Topic analysis of Algebraic Expressions and Algebraic Formulae in Form 1 and Form 2 Mathematics Textbooks: Analisis topik Ungkapan Algebra dan Rumus Algebra dalam Buku Teks Matematik Tingkatan 1 dan Tingkatan 2. Jurnal Pendidikan Sains dan Matematik Malaysia. 11, 2 (Sep. 2021), 26–38. DOI:https://doi.org/10.37134/jpsmm.vol11.2.3.2021.