Christol, Carl Quimby
Kluwer Law and Taxation , 1991
Buku Teks
editor, John L. Esposito; Abdulaziz Sachedina, John O. Voll, associate editors
Oxford University Press, 2004
Buku Referensi
Acton, Edward
Longman, 1986
Buku Teks
edited by Stephanie Abraham Hirsh and Philip Bacon
Harcourt Brace Jovanovich, 1988
Buku Teks
Reischauer, Edwin O.
Alfred A. Knopf, 1964
Buku Teks