APA Style

Heng, D, C, B. (2020). Think ! Mathematics New Syllabus Mathematics 8th Edition : Textbook Secondary 1B . Singapore: Shinglee Publisher PTE LTD.

MLA Style

Heng, Dr, Choy, Ban. "Think ! Mathematics New Syllabus Mathematics 8th Edition : Textbook Secondary 1B". Singapore: Shinglee Publisher PTE LTD, 2020. Text.