Национална детективска агенция Пинкертън (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Национална детективска агенция Пинкертън" in Bulgarian language version.

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archive.org

Foner, Eric и др. The Reader's Companion to American History. Houghton Mifflin Books, Oct 21, 1991. ISBN 0-395-51372-3.p. 842
Morn, Frank. The Eye That Never Sleeps: A History of the Pinkerton National Detective Agency. Bloomington, Indiana University Press, 1982. ISBN 0-253-32086-0. p. 18

doi.org

dx.doi.org

Churchill, Ward. From the Pinkertons to the PATRIOT Act: The Trajectory of Political Policing in the United States, 1870 to the Present // The New Centennial Review 4 (1). Spring 2004. DOI:10.1353/ncr.2004.0016. с. 1 – 72. Архивиран от оригинала на 2009-07-29. Посетен на 2011-02-11.

geocities.com

Churchill, Ward. From the Pinkertons to the PATRIOT Act: The Trajectory of Political Policing in the United States, 1870 to the Present // The New Centennial Review 4 (1). Spring 2004. DOI:10.1353/ncr.2004.0016. с. 1 – 72. Архивиран от оригинала на 2009-07-29. Посетен на 2011-02-11.

web.archive.org

Churchill, Ward. From the Pinkertons to the PATRIOT Act: The Trajectory of Political Policing in the United States, 1870 to the Present // The New Centennial Review 4 (1). Spring 2004. DOI:10.1353/ncr.2004.0016. с. 1 – 72. Архивиран от оригинала на 2009-07-29. Посетен на 2011-02-11.