Grigoryan, L., author
Progress Publishers, 1971
Buku Teks
edited by P.S. Romashkin
Foreign Laguage Publishing House, 1976
Buku Teks
edited by P. S. Romashkin ; translated from the Russian by Yuri Sdobnikov
Foreign Languages Publishing House, [196?]
Buku Teks
Schuman, Frederick L., author
Alfred A. Knopf, 1949
Buku Teks
edited by R.R. Milner-Gulland
Pergamon Press, 1964
Buku Teks