Lenin, Vladimir I., author
Foreign Languanges Publishing House, [1967]
Buku Teks
Bayanov, B., author
Progress , [1968]
Buku Teks
edited by John Feather and Paul Sturges
Roudledge, 1997
Buku Referensi
ed. by John Feather, Paul Sturges
Routledge, 2003
Buku Referensi
Marcell Dekker, 1968
Buku Referensi