Sovereignty of Puerto Rico during the Cold War (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sovereignty of Puerto Rico during the Cold War" in English language version.

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Lechuga Hevia, Carlos (2001). Cuba and the Missile Crisis. Melbourne, Australia: Ocean Press. p. 142. ISBN 978-1-876175-34-4.

Blumberg, Arnold (1995). Great Leaders, Great Tyrants?: Contemporary Views of World Rulers Who Made History. Westport, Connecticut: Greenwood Press. pp. 23–24. ISBN 978-0-313-28751-0.
Smith, Joseph (1998). The Cold War 1945–1991. Oxford: Blackwell. p. 95. ISBN 978-0-631-19138-4.
Zubok, Vladislav M. (1994). "Unwrapping the Enigma: What Was Behind the Soviet Challenge in the 1960s?". In Diane B. Kunz (Ed.), The Diplomacy of the Crucial Decade: American Foreign Relations During the 1960s. New York: Columbia University Press. p. 158–159. ISBN 978-0-231-08177-1.
Jones, Howard (2009). Crucible of Power: A History of American Foreign Relations from 1945. Lanham: Rowman & Littlefield. p. 122. ISBN 978-0-7425-6454-1.

Ángel Collado Schwarz & Marco Rigau (December 22, 2013). "El Grupo de los 22" (in Spanish). La Voz del Centro. Retrieved February 18, 2014.