Gaya APA
PRIYATNA, A.
(2009).
BE A SMART TEENAGER! (FOR BOYS&GIRL)
.
Jakarta:
PT Elex Media Komputindo.
Gaya MLA
PRIYATNA, ANDRI.
"BE A SMART TEENAGER! (FOR BOYS&GIRL)".
Jakarta:
PT Elex Media Komputindo,
2009.
Text.