Gaya APA
Priyatna, A. (2010).
Let's End Bullying: Memahami, Mencegah & Mengatasi Bullying .
Jakarta:
PT. Elex Media Komputindo.
Gaya MLA
Priyatna, Andri.
"Let's End Bullying: Memahami, Mencegah & Mengatasi Bullying".
Jakarta:
PT. Elex Media Komputindo,
2010.
Text.