Collars, C., Lee, K. P., Hoe, L. N., & Seng, T. C. (2003). Shaping maths: Activity book. Federal Publications.
芝加哥风格引文Collars, Charlotte, Koay Phong Lee, Lee Ngan Hoe, 与 Tan Cheow Seng. Shaping Maths: Activity Book. Singapore: Federal Publications, 2003.
MLA引文Collars, Charlotte, et al. Shaping Maths: Activity Book. Federal Publications, 2003.
警告：这些引文格式不一定是100％准确.