A. R. bin Hamdan, M. F. bin Mustafa, and H. binti Taha, “The Relationship Between Teachers’ Anxiety, Confidence, and Attitudes with Mathematics Achievement of Primary School Pupils: Hubungan di antara Kebimbangan, Keyakinan dan Sikap Guru dengan Pencapaian Matematik Murid Sekolah Rendah”, J. Sci. Math. Lett., vol. 9, no. 2, pp. 49–61, Jul. 2021, doi: 10.37134/jsml.vol9.2.6.2021.