Leeming, Glenda
Published for the British Council, 1972
Buku Teks
Swinnerton, Frank
Longman , 1961
Buku Teks
Arnold, Alvin L.
John Wiley & Sons, 1993
Buku Referensi
Trilling, Lionel
Meridian Books, 1955
Buku Teks
Arnold, Thurman Wesley
New Haven Yale University Press 1937,
Buku Teks