Buchanan, Brian, author
Clive Bingley & Linnet Books, 1976
Buku Referensi
Fouloy, Christian D. De., author
Martinus Nijhoff Publishers, 1994
Buku Referensi
edited by M.C. Howatson and Ian Chilvers
Oxford University Press, 1993
Buku Referensi
edited by M.C. Howatson
Oxford University Press, 1995
Buku Referensi
edited by S.H. Steinberg
Funk & Wagnalls, 1954
Buku Referensi