Messenger, S. (2020). Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd.
芝加哥风格引文Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. London: Simon & Schuster UK Ltd, 2020.
MLA引文Messenger, Shannon. Keeper of the Cities: Unlocked No. 8.5. Simon & Schuster UK Ltd, 2020.
警告：这些引文格式不一定是100％准确.