APA Style

Cowell, C. (). How to Train Your Dragon: How to Betray a Dragon's Hero (How to Train Your Dragon, 11) . : Little, Brown Books for Young Readers.

MLA Style

Cowell, Cressida. "How to Train Your Dragon: How to Betray a Dragon's Hero (How to Train Your Dragon, 11)". : Little, Brown Books for Young Readers, . Text.