Schiele, Bernard, aditor
Springer, 2012
eBooks
Margaret H. DeFleur, Patricia Kearney, Timothy G. Plax, Melvin L. DeFleur
McGraw-Hill, 2014
Buku Teks
Krolokke, Charlotte, author
Sage Publications, 2006
Buku Teks
Knapp, Mark L., author
Allyn and Bacon, 1996
Buku Teks
O`Shaughnessy, Douglas, 1950-, author
Addison-Wesley, 1987
Buku Teks