APA (7e ed.) Bronvermelding

Primalani, V., Leng, C. M., Quek, K., & Meng, S. K. (2003). In step maths: Workbook. SNP Panpac.

Chicago (17e ed.) Bronvermelding

Primalani, Varsha, Chan Mei Leng, Karen Quek, en Sin Kwai Meng. In Step Maths: Workbook. Singapore: SNP Panpac, 2003.

MLA (8e ed.) Bronvermelding

Primalani, Varsha, et al. In Step Maths: Workbook. SNP Panpac, 2003.