Rosenfeld, George W., author
Routledge, Taylor & Francis Group, 2009
Buku Teks
Semrud-Clikeman, Margaret, author
Allyn and Bacon, 1995
Buku Teks
Weis, Robert, author
Sage, 2008
Buku Teks
edited by Joseph D. Noshpitz
John Wiley & Sons, 1997
Buku Referensi
Johnson, Barbara Schoen, editor
J.B. Lippincott, 1995
Buku Teks