APA Style
Sc., D, T, B.
(2007).
Challenging 4 in 1 Maths Primary 4
.
Singapore:
Educational Publishing House Pte Ltd.
MLA Style
Sc., Dawn, Tai, B..
"Challenging 4 in 1 Maths Primary 4".
Singapore:
Educational Publishing House Pte Ltd,
2007.
Text.