Canongate Academic, 1994
Buku Teks
Fitzhugh, T.R.
Chapel Hill Univ. of North Coalina Press 1943
Buku Teks
Daiches, David, editor
New York, Cornell University Press
Buku Referensi
Gould, Jean
Dodd Mead , 1964
Buku Teks
Mertins, Louis
University of Oklahoma Press , 1965
Buku Teks