Castro,Adam-Troy. Gustav Gloom and the Nightmare Vault #2.
Cita Chicago (17th ed.)Castro,Adam-Troy. Gustav Gloom and the Nightmare Vault #2. Grosset & Dunlap.
Cita MLA (8th ed.)Castro,Adam-Troy. Gustav Gloom and the Nightmare Vault #2.
Atenció: Aquestes cites poden no estar 100% correctes.