[[1] Katherine L. Herbig, The Expanding Spectrum of Espionage by Americans, 1947 -2015, Defense Personnel and Security Research Center, 2017, p. 60, accesed on 02.02.2018 on site http://www.dhra.mil/Portals/52/Documents/perserec/reports/TR-17-10_The_Expanding_Spectrum_of_Espionage_by_Americans_1947_2015.pdf?ver=2018-02-14-073446-943]Search in Google Scholar
[[2] Taylor, BC, Organizing the “unknown subject”: Los Alamos, espionage, and the politics of biography, QUARTERLY JOURNAL OF SPEECH Volume: 88, Issue: 1 Pages: 33-49 DOI: 10.1080/0033563020938435810.1080/00335630209384358]Open DOISearch in Google Scholar
[[3] Raymond Ojserkis, “THE UNITED STATES & THE BEGINNING OF THE COLD WAR ARMS RACE”, p. 79, articol accesat în 14.02.2018 pe site-ul http://etheses.lse.ac.uk/2607/1/U615556.pdf]Search in Google Scholar
[[4] https://www.cia.gov/library/readingroom/docs/OBOPUS%20BG%20FIEND%20%20%20VOL.%201%20(COUNTRY%20PLAN%20ALBANIA)_0029.pdf]Search in Google Scholar
[[5] Penkovsky Paper, https://www.cia.gov/library/readingroom/docs/CIA-RDP7500149R000600240016-6.pdf]Search in Google Scholar
[[6] http://www.dhra.mil/perserec/n]Search in Google Scholar
[[7] Katherine L. Herbig Op. Cit. p.46]Search in Google Scholar
[[8] John Prados, The John Walker Spy Ring and The U.S. Navy’s Biggest Betrayal , accesed on 05.02.2018 on site https://news.usni.org/2014/09/02/john-walker-spy-ring-u-s-navysbiggest-betrayal]Search in Google Scholar
[[9] idem]Search in Google Scholar
[[10] https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/csistudies/studies/vol51no2/intelligence-in-recent-public-literature.html]Search in Google Scholar
[[11] Barry Royden, Tolkachev, A Worthy Successor to Penkovsky, accesed on 06.02.2018 on site http://www.dtic.mil/dtic/tr/fulltext/u2/a525682.pdf]Search in Google Scholar
[[12] An Assessment of the Aldrich H. Ames Espionage Case and Its Implications for U.S. Intelligence , p. 53, accesed on 06.02.2018 on site]Search in Google Scholar
[https://www.intelligence.senate.gov/sites/default/files/publications/10390.pdf]Search in Google Scholar
[[13] idem, p. 58]Search in Google Scholar
[[14] David Ensor, What made the American turncoat tick?, accesed on 08.02.2018 on site http://edition.cnn.com/2002/LAW/05/10/spy.hanssen/]Search in Google Scholar
[[15] https://economictimes.indiatimes.com/definition/whistleblower]Search in Google Scholar
[[16] Tsukayama, 2014 apud http://www.dhra.mil/Portals/52/Documents/perserec/reports/TR-17-10_The_Expanding_Spectrum_of_Espionage_by_Americans_1947_2015.pdf?ver=2018-02-14-073446-943 .]Search in Google Scholar