Primalani, V., Leng, C. M., Quek, K., & Meng, S. K. (2003). In step maths: Workbook. SNP Panpac.
Chicagoスタイル(17版)引用形式Primalani, Varsha, Chan Mei Leng, Karen Quek, , Sin Kwai Meng. In Step Maths: Workbook. Singapore: SNP Panpac, 2003.
MLA(8版)引用形式Primalani, Varsha, et al. In Step Maths: Workbook. SNP Panpac, 2003.
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