Hakkarainen, P. (2011). A State of Peace in Europe: West Germany and the CSCE, 1966-1975. Berghahn Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHakkarainen, Petri. A State of Peace in Europe: West Germany and the CSCE, 1966-1975. Berghahn Books, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHakkarainen, Petri. A State of Peace in Europe: West Germany and the CSCE, 1966-1975. Berghahn Books, 2011.
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