Weis, Robert, author
Sage Publications, 2008
Buku Teks
Rosenfeld, George W., author
Routledge, Taylor & Francis Group, 2009
Buku Teks
Schaefer, Charles E, author
The Guilford Press, 2016
Buku Teks
authored by Robert D. Friedberg ... [et al.] ; illustrations by Jolene H. Garcia
Routledge, 2011
Buku Teks
Johnson, James H., author
Allyn and Bacon, 1997
Buku Teks