Orr, T. (2021). Frederick Douglass's Fourth of July speech. Cherry Lake Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrr, Tamra. Frederick Douglass's Fourth of July Speech. Ann Arbor, Michigan: Cherry Lake Press, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOrr, Tamra. Frederick Douglass's Fourth of July Speech. Cherry Lake Press, 2021.
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