APA (7 वां संस्करण) प्रशस्ति पत्र
Hassler, W. W. (2010). The first day at Gettysburg: Crisis at the crossroads. University of Alabama Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Hassler, Warren W. The First Day at Gettysburg: Crisis at the Crossroads. Tuscaloosa, Ala.: University of Alabama Press, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Hassler, Warren W. The First Day at Gettysburg: Crisis at the Crossroads. University of Alabama Press, 2010.
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