Smith, A. T. (2019). Mr. Penguin and the fortress of secrets (First edition.). Peachtree Publishing Company Inc..
Cita Chicago Style (17a ed.)Smith, Alex T. Mr. Penguin and the Fortress of Secrets. First edition. Atlanta: Peachtree Publishing Company Inc., 2019.
Cita MLA (8a ed.)Smith, Alex T. Mr. Penguin and the Fortress of Secrets. First edition. Peachtree Publishing Company Inc., 2019.
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