Walker, S. M. (2014). Boundaries: How the Mason-Dixon line settled a family feud & divided a nation (1st ed., reinforced trade ed.). Candlewick Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalker, Sally M. Boundaries: How the Mason-Dixon Line Settled a Family Feud & Divided a Nation. 1st ed., reinforced trade ed. Somerville, Mass.: Candlewick Press, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWalker, Sally M. Boundaries: How the Mason-Dixon Line Settled a Family Feud & Divided a Nation. 1st ed., reinforced trade ed. Candlewick Press, 2014.
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