Gaya APA

Kheong, F, H., Ramakrishnan, C. (2004). Maths 4A: Practice book (4A SD). Singapore: Marshall Federal Publication.

Gaya MLA

Kheong, Fong, Ho., Ramakrishnan, Chelvi. "Maths 4A: Practice book". 4A SD Singapore: Marshall Federal Publication, 2004. .