Suranyi-Unger, Theo, author
McGraw-Hill, 1950
Buku Teks
Department of Foreign Affairs and Trade in Cooperation with Tasman Asia Pacific
Department of Foreign Affairs and Trade, East Asia Analytical Unit, 1998
Buku Teks
Jones, J. Harry, author
Pitman, 1935
Buku Teks
Anshen, Melvin
Macmillan, 1954
Buku Teks
Keilhau, Wilhelm, author
George Allen & Unwin, 1951
Buku Teks