Grierson, Herbert John Clifford, Sir, 1866-1960
A critical history of English poetry
Chatto and Windus, 1950
 Buku Teks SO
Stepanchev, Stephen
American poetry since 1945 : a critical survey
Harper and Row, 1965
 Buku Teks SO
Ghirshman, R.
Iran : from the earliest times to the islamic conquest
Penguin Books, 1954
 Buku Teks SO
Kroeber, Karl
Studying poetry : a critical anthology of English and American poems
Harper and Row, 1965
 Buku Teks SO
Coulton, G.G. [George Gordon]
Medieval panorama: the English scene from conquest to reformation
Macmillan; University Press, 1938
 Buku Teks SO