Manktelow, James, author
Signal House, 2004
Buku Teks
Burns, Tom, author
Sage Publications, 2003
Buku Teks
Eisenberg, Michael B., author
Libraries Unlimited, 2004
Buku Teks
Book publishing Kaifengbu, 2016
Buku Teks
Stewart, William, author
How to Books, 1999
Buku Teks