APA Style
Heo, S, B.
(2007).
Why? Happy science 5
(
Jil.5)
.
Jakarta:
PT Elex Media Komputindo.
MLA Style
Heo, Soon, Bong.
"Why? Happy science 5".
Jil.5
Jakarta:
PT Elex Media Komputindo,
2007.
Buku SMP Athalia.