Syed Hussein Alatas
Prentice-Hall, 1999
Buku Teks
Abdul Rahman Abdul Aziz
Berita Publishing Sdn Bhd, 2009
Buku Teks SO
Hobsbaron, Eric. J
Teplok Press, 2000
Buku Teks
Jessey Bass Publishers, 1978
Buku Teks
Chiang, Kai Shek
Macmillan, 1947
Buku Teks SO