Walters, Vivienne
Croom Helm, 1980
Buku Teks
edited by Joanna Household
Webb & Bower, 1983
Buku Referensi
Thackeray, W.M. (William Makepeace)
J.M. Dent & Sons, 1948
Buku Klasik
Florence, P. Sargant
Hutcchinson's University Library , 1950;c. 1949
Buku Teks
Marx, Karl, 1818-1883
Foreign Languages Publishing House, 1953
Buku Teks