Giddens, Anthony, author
W.W. Norton & Compan, 2005
Buku Teks
Hughes, Michael, author
McGraw-Hill, Higher Education, 2009
Buku Teks
Schaefer, Richard T, author
McGraw-Hill, Higher Education, 2009
Buku Teks
Tischler, Henry L.
Wadsworth and Cengage Learning, 2014
Buku Teks
Brinkerhoff, David B., author
Wadsworth, Cengage Learning, 2014
Buku Teks