Jones, J.A.P., author
Longman, 1971
Buku Teks
Powel, Anthony, author
W.W. Norton & Company, 1986
Buku Teks
Royer, King
John Wiley & Sons, 1970
Buku Teks
King, Horace Maybray
John Murray, 1953
Buku Teks
King, Martin Luther
Harper & Row Publhers, 1968
Buku Teks