Gaya APA

Unbreakable Wings. (2014). Yogyakarta: Sheila.

Gaya Chicago

Unbreakable Wings. . Yogyakarta: Sheila, 2014. Text.

Gaya MLA

Unbreakable Wings. . Yogyakarta: Sheila, 2014. Text.

Gaya Turabian

Unbreakable Wings. Yogyakarta: Sheila, 2014. Print.