Messenger, S. (2020). Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd.
Čikaški stil citiranja (17. izdanje)Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. London: Simon & Schuster UK Ltd, 2020.
MLA način citiranja (9. izdanje)Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd, 2020.
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