Sanders, Donald H., author
McGraw-Hill, 1995
Buku Teks
Russel, Fox Hon, author
Covendish Publishing Limited, 2000
Buku Teks
Viti de Marco, Antonio de, marchese, 1858-1943, author
Jonathan Cape, 1958
Buku Teks
Griffin, E.M., author
Mc Graw Hill, 2003
Buku Teks
Ikeda, Daisaku, 1928-, author
Kodansha International, 1977
Buku Teks