Watts, C. T. (2007). Joseph Conrad: 'The secret agent'. Humanities-Ebooks.
芝加哥风格引文Watts, Cedric Thomas. Joseph Conrad: 'The Secret Agent'. Tirril [England] ; Penrith, Calif.: Humanities-Ebooks, 2007.
MLA引文Watts, Cedric Thomas. Joseph Conrad: 'The Secret Agent'. Humanities-Ebooks, 2007.
警告：这些引文格式不一定是100％准确.