Goodman, Alvin S., author
Prentice-Hall, 1984
Buku Teks
Washington The World Bank 1993,
Buku Teks
Kuiper, Edward, author
Butterworth, 1967
Buku Teks
Wiener, Aaron, author
McGraw-Hill, 1972
Buku Teks
Huang, Shuwei, author
Taiwan Foundation for Democracy, 2022
Artikel Jurnal