Gaya APA

Toon, T, Y. (2013). Chemistry Matters GCE 'O' Level 2nd Edition : WorkBook Teacher's Edition (2). Singapore :: Marshall Cavendish International Private Limited.

Gaya MLA

Toon, Tan, Yin. "Chemistry Matters GCE 'O' Level 2nd Edition : WorkBook Teacher's Edition". 2 Singapore :: Marshall Cavendish International Private Limited, 2013. Text.