«Obituary». The Washington Post. 6 de enero de 1977. p. B-10. Consultado el 19 de marzo de 2019.
see also Chester G Starr, Review of Weapons Systems and Political Stability, American Historical Review, Feb 1984, p98, available at carrollquigley.net
Foreword, written by historian Harry J HoganArchivado el 1 de septiembre de 2013 en Wayback Machine. in 1982, to Quigley's Weapons Systems and Political Stability
Foreword, written by historian Harry J HoganArchivado el 1 de septiembre de 2013 en Wayback Machine. in 1982, to Quigley's Weapons Systems and Political Stability