Eighth United Nations Congress on the Prevention of Crime and the Treatment of Offenders, Havana, 27 August-7 September 1990: report prepared by the Secretariat (Veröffentlichung der Vereinten Nationen, Best.-Nr.
Eighth United Nations Congress on the Prevention of Crime and the Treatment of Offenders, Havana, 27 August-7 September 1990: report prepared by the Secretariat (United Nations publication, Sales No. E.91.IV.2), chap I.