Phythian, B.A.
Hodder & Stoughton, 1980
Buku Teks
edited by Paul Beale
Routledge, 1992
Buku Referensi
Partridge, Eric, 1894-1979
Routledge, 1984
Buku Referensi
Buku Referensi
edited by Catherine Soanes and Angus Stevenson
Oxford University Press, 2006
Buku Referensi