Houston, K. (2013). Shady characters: The secret life of punctuation, symbols, & other typographical marks (First edition.). W.W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHouston, Keith. Shady Characters: The Secret Life of Punctuation, Symbols, & Other Typographical Marks. First edition. New York ; London: W.W. Norton & Company, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHouston, Keith. Shady Characters: The Secret Life of Punctuation, Symbols, & Other Typographical Marks. First edition. W.W. Norton & Company, 2013.
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