Roetter, C. (1963). The diplomatic art, an informal history of world diplomacy. Macrae Smith.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoetter, Charles. The Diplomatic Art, an Informal History of World Diplomacy. Philadelphia: Macrae Smith, 1963.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRoetter, Charles. The Diplomatic Art, an Informal History of World Diplomacy. Macrae Smith, 1963.
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