APA (7th ed.) Citation

Khoo, Lim, & Suhaimi Hassan. (2007). Mathematics: SPM. PNI Neuron (M).

Chicago Style (17th ed.) Citation

Khoo, Lim, and Suhaimi Hassan. Mathematics: SPM. Seri Kembangan, Selangor: PNI Neuron (M), 2007.

MLA (8th ed.) Citation

Khoo, et al. Mathematics: SPM. PNI Neuron (M), 2007.