McCauley, Martin
Longman, 1993
Buku Teks
Agzamkhojayev, A., author
Foreign Language Publishing House, [date of publication not identified]
Buku Teks
New York: M.E Sharpe
Majalah, Jurnal, Buletin
Munich : Institute for the Study of the USSR
Majalah, Jurnal, Buletin
Bayanov, B., author
Progress , [1968]
Buku Teks