edited, S.G. Shapovalenko
Unesco, 1963
Buku Teks SO
Brezhnev, L. I.
Progress, 1975
Buku Teks
Kemper, Michael, edited, Motika, Raoul, edited, Reichmuth, Stefan, edited
Routledge, 2010
Buku Teks
edited by Stewart E. Fraser
International Studies Group , 1969
Buku Teks SO
Skilight Propessional Dev, 2000
Buku Teks