Canongate Academic, 1994
Buku Teks
Burns, Robert
Longmans, Green and Co. , 1957
Buku Teks
Fitzhugh, T.R.
Chapel Hill Univ. of North Coalina Press 1943
Buku Teks
Jones, Evan
Oxford University Press, 1969
Buku Teks
Semmler, Clement
Longman Group, 1969
Buku Teks