Yeric, Jerry L.
Public opinion : the visible politics
F.E. Peacock, 1983
 Buku Teks SO
Effects of information provision on responses to opinion polls on the Korea - U.S. free trade agreement
 Artikel Jurnal
Cooperrider, David L.
Appreciative inquiry handbook / David L. Cooperrider and Diana Whitney.
Crown Custom Publishing, 2008
 Buku Teks
Albig, WIlliam
Public opinion
McGraw-Hill, 1939
 Buku Teks SO
Reader in public opinion and communication
edited by Bernard Berelson and Morris Janowith
Free Press, 1966
 Buku Teks SO