Gaya APA
Yoon-Soo, K. et al
(2009).
Why? : Happy Math 1
(
Vol. 1)
.
Jakarta:
ELex Media Komputindo.
Gaya MLA
Yoon-Soo, Kim. et al.
"Why? : Happy Math 1".
Vol. 1
Jakarta:
ELex Media Komputindo,
2009.
Book.