Damon, Philip
Modes of analogy in ancient and medieval verse / Philip Damon
University of California Press, 1961
 Buku Klasik
Jackson, William Thomas Hobdell
Medieval literature : a history and a guide /​ William Thomas Hobdell Jackson.
Collier, 1966
 Buku Teks
Cohen, J.M. (John Michael), 1903-1989
A history of Western literature
Penguin Books, 1956
 Buku Teks
Zwicky, Fay
Lyre in the pawnshop : essays on literature and survival 1974-1984/Fay Zwicky
University of Western Australia Press, 1986.
 Buku Teks
Curtius, Ernst Robert
European literature and the Latin middle ages / Ernst Robert Curtius; translated from the German by Willard R. Trasktranslation from the German by
Pantheon Books, 1953
 Buku Teks