Whitaker, Joseph, author
J. Whitaker and Sons, 1987
Buku Referensi
J. Whitaker and Sons, 1994
Buku Referensi
J. Whitaker and Sons, 1990
Buku Referensi
American Library Association, 1984
Buku Referensi
Brooks, Van Wyck
: J. M. Dent & Sons Ltd,, 1947
Buku Teks