Gaya APA
Lee, M, C, N. (2007).
Geography Insights Activity Book 3.Normal (Academic) .
Singapore:
Pearson Education South Asia Pte Ltd.
Gaya MLA
Lee, MC., Clarke,, NES.
"Geography Insights Activity Book 3.Normal (Academic)".
Singapore:
Pearson Education South Asia Pte Ltd,
2007.
Text.