Yee, L. P., Seng,Teh Keng, & Keong,Looi Chin. (1999). Pure mathematics: Edited by Lee Peng Yee, Teh Keng Seng and Looi Chin Keong (Rev. ed.). Shing Lee Publishers.

Yee, Lee Peng, Seng,Teh Keng, and Keong,Looi Chin. Pure Mathematics: Edited by Lee Peng Yee, Teh Keng Seng and Looi Chin Keong. Rev. ed. Kewalram Hillview, Singapore: Shing Lee Publishers, 1999.

Yee, Lee Peng, et al. Pure Mathematics: Edited by Lee Peng Yee, Teh Keng Seng and Looi Chin Keong. Rev. ed. Shing Lee Publishers, 1999.