Norman Miller, editor
Routledge, 2009
Buku Teks
Morris, Michael A, author
Palgrave Macmillan, 2016
Buku Teks
Starling, Grover, author
Dorsey Press, 1979
Buku Teks
Mosely, Philip E.
Vintage Books, 1960
Buku Teks
Pethybridge, Roger
Frederick A. Praeger, 1962
Buku Teks