Broto, Carles, author
Links, [Date of publication not identified]
Buku Referensi
Slessor, Catherine, author
Mitchell Beazley, 2000
Buku Teks
Spens, Michael, author
Academic Edition, 1995
Buku Teks
Zelinsky, Marilyn
Buku Teks
edited by Michael Hulse, David Kennedy and David Morley
Bloodaxe Books, 1993
Buku Teks