Gaya APA
Wah, L, E. (2007).
Longman : Effective Guide To 0 Level Chemistry = 2rd Edition .
Singapore:
Pearson Education South Asia.
Gaya MLA
Wah, Lim, Eng.
"Longman : Effective Guide To 0 Level Chemistry = 2rd Edition".
Singapore:
Pearson Education South Asia,
2007.
Book.