Beasley, Norman
Buell, Sloan and Pearce, 1952
Buku Teks
Oxford University Press, 1997
Buku Referensi
Durrell, Gerald, foreword
William Collins Sons, 1981
Buku Teks
edited by Matthew Beaumont
Blackwell, 2007
Buku Teks
Neimark, Edith D.
Harcourt Brace Javanovich, 1987
Buku Teks