APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

Teo, Shirley, Kang Mui Tiang, Varsha Primalani, Chan Mei Leng, Karen Quek, en Sin Kwai Meng. In Step Maths: Textbook. Singapore: SNP Panpac, 2003.

MLA (8e ed.) Bronvermelding

Teo, Shirley, et al. In Step Maths: Textbook. SNP Panpac, 2003.