^Christian Democracy in the European Union, 1945/1995 by Emiel Lamberts, pgs 421 and 423
^Mosley, Philip (January 2001). Split screen: Belgian cinema and cultural identity by Philip Mosley, pg 102. ISBN 9780791447475. Retrieved December 11, 2012.
^Special to The New York Times (1974-01-30). "The New York Times of January 30, 1974". Select.nytimes.com. Retrieved December 11, 2012.
^Kissinger, Henry (24 May 2011). Years of Upheaval by Henry Kissinger, pg 501. ISBN 9781451636475. Retrieved December 11, 2012.
^Oudenaren, John Van (1991). Détente in Europe: the Soviet Union and the West since 1953 by John Van Oudenaren, pg 81. ISBN 0822311410. Retrieved December 11, 2012.