Piskurich, George M., author
Jossey-Bass, 1994
Buku Teks
Church, James C., author
McGraw-Hill, 1979
Buku Referensi
Hogan, Rex, 1944-, author
Prentice-Hall, 1990
Buku Teks
Sophie Laws, Caroline Harper, Nicola JOnes, Rachel Marcus
SAGE, 2013
Buku Teks
Editors by Anne Grodzins Lipow; Deborah A. Carver
American Library Association , 1992
Buku Teks