Galtung, Johan, author
George Allen and Unwin, 1969
Buku Teks
Fox, John, author
John Wiley & Sons, 1984
Buku Teks
Fredric M. Jablin, Linda L. Putnam
Sage Publications, 2001
Buku Teks
McNeill, Patrick, author
Routledge, 1990
Buku Teks
White, Theresa L., author
Wadsworth and Cengage Learning, 2013
Buku Teks