Markle. (2000). Spies and spymasters of the Civil War (Rev. ed.). Hippocrene Books.
Chicago Style (17th ed.) CitationMarkle. Spies and Spymasters of the Civil War. Rev. ed. New York: Hippocrene Books, 2000.
MLA (8th ed.) CitationMarkle. Spies and Spymasters of the Civil War. Rev. ed. Hippocrene Books, 2000.
Warning: These citations may not always be 100% accurate.