Stepanchev, Stephen, author
Harper and Row, 1965
Buku Teks
Forrest-Thomson, Veronica, author
Manchester University Press, 1978
Buku Teks
Pinto, Vivian de Sola
Hutchinson's University Library, 1951
Buku Teks
edited by Antony Easthope, John O. Thompson
Harvester Wheatsheaf, 1991
Buku Teks
Ross, Alan, author
British Council, 1951
Buku Teks