Gaya APA
Cowell, C. (2011).
How to Train Your Dragon (Book 7); How to Ride a Dragon's Storm .
Great Britain:
Little, Brown and Company.
Gaya MLA
Cowell, Cressida.
"How to Train Your Dragon (Book 7); How to Ride a Dragon's Storm".
Great Britain:
Little, Brown and Company,
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Novel Anak.