Allen, G. (2010). An african millionaire: Episodes in the life of the illustrious colonel clay. Project Gutenberg.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAllen, Grant. An African Millionaire: Episodes in the Life of the Illustrious Colonel Clay. To be supplied: Project Gutenberg, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAllen, Grant. An African Millionaire: Episodes in the Life of the Illustrious Colonel Clay. Project Gutenberg, 2010.
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