Lasswell, Harold D., author
University of Chicago Press, 1960
Buku Teks
Archer, Robert P.
New jersey, 2005
Buku Teks
Wilmshurst, Linda, author
New Jersey, 2005
Buku Teks
Rudd, Betty, author
California : SAGE, 2014
Buku Teks
edited by Roger E. Mayer
Guilford Press, 1986
Buku Teks