^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. Jan-Apr 1980". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1982Jan-June". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1984:Oct.-Dec." HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1985". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1990". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1991". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1993Jan-Apr,Aug,Dec 1993". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. 1995Jan-Apr 1995". HathiTrust. Retrieved 2018-07-12.
^"Chiefs of State and Cabinet members of foreign governments / National Foreign Assessment Center. Oct-Dec 2000". HathiTrust. Retrieved 2018-07-12.
^ abcdefghij"Chiefs of State and Cabinet Members of Foreign Governments". www.cia.gov. Archived from the original on September 30, 2007. Retrieved 2018-07-12.