Thomson Wadsworth, 2003
Multimedia
edited by Herbert Gottweis and Alan Petersen
Routledge, 2008
Buku Teks
LaPalombara, Joseph
Conference Board, 1977
Buku Teks
Gamer, Robert E.
Allyn and Bacon, 1976
Buku Teks
edited by S.N. Eisenstadt
Little, Brown and Company, 1968
Buku Teks