Friedman, Thomas L., author
Penguin Book, 2006
Buku Teks
Gilbert, Martin, author
Routledge, 1994
Buku Teks
Frank, Frederick S., author
Garland Publishing, 1987
Buku Referensi
Chi tung Huang, author
Taiwan Foundation for Democracy, 2019
Artikel Jurnal
Reuss, Henry S., author
McGraw-Hill, 1964
Buku Teks