Newton, G. W. (2005). Silent sentinels: A reference guide to the artillery at Gettysburg. Savas Beatie.
Chicago-čujuhus (17. p.)Newton, George W. Silent Sentinels: A Reference Guide to the Artillery at Gettysburg. New York: Savas Beatie, 2005.
MLA-čujuhus (9. p.)Newton, George W. Silent Sentinels: A Reference Guide to the Artillery at Gettysburg. Savas Beatie, 2005.
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