Brugmann, Jeb, 1957-, author
Bloomsbury Press, 2010
Buku Teks
Giddens, Anthony, author
Profile , 2002
Buku Teks
Rosen, Bob, 1955-, author
Jossey-Bass, 2014
Buku Teks
Morgan, Mary S., 1952-2011, author
Cambridge University Press, 2012
Buku Teks
Maxwell, Nancy Irwin, author
Jones & Bartlett Learning, 2014
Buku Teks