Gaya APA

Lam, L, P, K, E, Y. (2007). BIOLOGY Matters Textbook : G.C.E. 'O' Level (Cet. 2). Singapore: Marshall Cavendish Education.

Gaya MLA

Lam, Lam, Peng, Kwan,, Eric, YK. "BIOLOGY Matters Textbook : G.C.E. 'O' Level". Cet. 2 Singapore: Marshall Cavendish Education, 2007. Text.