APA Style
Tan, Yuwen. (2012).
O level topical science chemistry: Past examination questions arranged by topics years 2002-2011 .
Singapore:
Singapore Asia Publishers.
Chicago Style
Tan, Yuwen.
O level topical science chemistry: Past examination questions arranged by topics years 2002-2011.
Singapore:
Singapore Asia Publishers,
2012.
Text.
MLA Style
Tan, Yuwen.
O level topical science chemistry: Past examination questions arranged by topics years 2002-2011.
Singapore:
Singapore Asia Publishers,
2012.
Text.
Turabian Style
Tan, Yuwen.
O level topical science chemistry: Past examination questions arranged by topics years 2002-2011.
Singapore:
Singapore Asia Publishers,
2012.
Print.