Moore, Clement Henry
Little, Brown & Co., 1970
Buku Teks
Rex, John
Oxford University Press, 1979
Buku Teks
Coates, John
Cambridge Cambridge University Press 1996,
Buku Teks
Moore, John A.
Harvard University Press , 1999
Buku Teks
Barton, John H.
Stanford University Press, 1981
Buku Teks