Gaya APA

Kwan, L, P. et al (2013). BIOLOGY Matters : GCE 'O' Level 2nd Edition (Cet.2). Singapore: Marshall Cavendish Education.

Gaya MLA

Kwan, Lam, Peng. et al. "BIOLOGY Matters : GCE 'O' Level 2nd Edition". Cet.2 Singapore: Marshall Cavendish Education, 2013. Text.