APA Style

Har, D, Y, B. et al (2020). Think Mathematics : New Syllabus Mathematics Textbook Secondary 1B (8 Edition) . : SL Education.

MLA Style

Har, Dr, Yeap, Ban. et al. "Think Mathematics : New Syllabus Mathematics Textbook Secondary 1B (8 Edition)". : SL Education, 2020. Text.