Messenger, S. (2020). Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd.
Cita Chicago (17th ed.)Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. London: Simon & Schuster UK Ltd, 2020.
Cita MLA (9th ed.)Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd, 2020.
Atenció: Aquestes cites poden no estar 100% correctes.