Seiple, S. (2015). Lincoln's spymaster: Allan Pinkerton, America's first private eye (First edition.). Scholastic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSeiple, Samantha. Lincoln's Spymaster: Allan Pinkerton, America's First Private Eye. First edition. New York: Scholastic Press, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSeiple, Samantha. Lincoln's Spymaster: Allan Pinkerton, America's First Private Eye. First edition. Scholastic Press, 2015.
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