Hammer, A. (1988). Hammer Witness to History. Cent Hodder and Stoughton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHammer, Armand. Hammer Witness to History. Great Britain: Cent Hodder and Stoughton, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHammer, Armand. Hammer Witness to History. Cent Hodder and Stoughton, 1988.
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