Gaya APA
Suropati, U. et al
(2015).
NEVER TOO YOUNG TO BECOME A BILLIONAIRE (BI)
.
Jakarta:
Elex Media Komputindo.
Gaya MLA
Suropati, Untung. et al.
"NEVER TOO YOUNG TO BECOME A BILLIONAIRE (BI)".
Jakarta:
Elex Media Komputindo,
2015.
TEXT.