APA Style
Toon, T, Y. et al (2010).
Discover Chemistry G.C.E 'O' Level Science Workbook .
Singapore:
Marshall Cavendish Education.
MLA Style
Toon, Tan, Yin. et al.
"Discover Chemistry G.C.E 'O' Level Science Workbook".
Singapore:
Marshall Cavendish Education,
2010.
Text.