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