Gaya APA

KHEONG, D, F, H. et al (2013). Workbook my pals are here: maths 1a (Ed.3). Singapore: Marshall Cavendish Education.

Gaya MLA

KHEONG, Dr, Fong, Ho. et al. "Workbook my pals are here: maths 1a". Ed.3 Singapore: Marshall Cavendish Education, 2013. Text.