Gaya APA
CHEW, C.
(2004).
LET'S LEARN SCIENCE! WORKBOOK YEAR 1
.
SINGAPORE:
Marshall Cavendish Education.
Gaya MLA
CHEW, CHARLES.
"LET'S LEARN SCIENCE! WORKBOOK YEAR 1".
SINGAPORE:
Marshall Cavendish Education,
2004.
Text.