Kemper, Michael, edited, Motika, Raoul, edited, Reichmuth, Stefan, edited
Routledge, 2010
Buku Teks
edited, S.G. Shapovalenko
Unesco, 1963
Buku Teks
Gup, Benton E.
Bankers Publication , 1990
Buku Teks
Krupskaya, N.K.
Foreign Languages Publishing House, 1957
Buku Teks
edited by William E. Griffith
Lexington Books, 1976
Buku Teks