Gaya APA

Horrendous, H, I, H., Cowel, C. (2005). How to Speak Dragonese . Klaten: Indahjaya Adipratama.

Gaya MLA

Horrendous, Haddock, III,, Hiccup., Cowel, Cressida. "How to Speak Dragonese". Klaten: Indahjaya Adipratama, 2005. Text / Book.