APA aipamena

Cowell,Cressida. (2009). how to break a dragon's heart.

Chicago Style aipamena

Cowell,Cressida. How to Break a Dragon's Heart. great britain, 2009.

MLA aipamena

Cowell,Cressida. How to Break a Dragon's Heart. 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.