Toy, S. (1966). A history of fortification from 3000 BC to AD 1700 (2nd ed.). Heinemann.
Chicago Style (17th ed.) CitationToy, Sidney. A History of Fortification from 3000 BC to AD 1700. 2nd ed. London: Heinemann, 1966.
MLA (9th ed.) CitationToy, Sidney. A History of Fortification from 3000 BC to AD 1700. 2nd ed. Heinemann, 1966.
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