Gaya APA

dkk, L, P, K. (2007). Biology Matters G.C.E 'O' Level (Practical Book) . Singapore: Marshall Cavendish Education.

Gaya MLA

dkk, Lam, Peng, Kwan,. "Biology Matters G.C.E 'O' Level (Practical Book)". Singapore: Marshall Cavendish Education, 2007. Text.