Tobin, Joseph Jay
Yale University Press, 1989
Buku Teks
Peach, David A.
Harvard University Press, 1974
Buku Teks
Schmitz, Adrienne, author
Urban Land Institute, 2001
Buku Teks
Kuhlthau, Carol Collier, 1937-, author
Libraries Unlimited, 2004
Buku Teks
Barber, James David
Prentice-Hall, 1977
Buku Teks