Gaya APA
Tho, Lai Hoong. (2006).
Interactive science 1 workbook 1 .
SIngapore:
EPB.
Gaya Chicago
Tho, Lai Hoong.
Interactive science 1 workbook 1.
SIngapore:
EPB,
2006.
Text.
Gaya MLA
Tho, Lai Hoong.
Interactive science 1 workbook 1.
SIngapore:
EPB,
2006.
Text.
Gaya Turabian
Tho, Lai Hoong.
Interactive science 1 workbook 1.
SIngapore:
EPB,
2006.
Print.