Latourette, Kenneth Scott, author
Macmillan, 1951
Buku Teks
Hudson, W. H., author
New York E.P. Dutton & Co 1947
Buku Teks
Linebarger, Paul Myron Anthony, 1913-1966, author
York D van Nostrand, 1954
Buku Teks
Azhayev, Vasili
Moscow Foreign Languages Publishing House 1950
Buku Teks
Dallin, David
Hollis & Carter, 1949
Buku Teks