Mann, Thomas, author
Oxford University Press, 1998
Buku Teks
Mann, Thomas, author
Oxford University Press, 2005
Buku Teks
Lawal, Ibironke O., author
Chandos Publishing, 2009
Buku Teks
Kennedy, James H., author
Pierian Press, 1984
Buku Referensi
Weiner, E.S.C., compiler
Clarendon Press, 1993
Buku Referensi