Degenne, Alain, author
Sage, 1999
Buku Teks
Leeuwen, Theo van, author
Routledge, 2005
Buku Teks
Munson, Byron E.
College of Administrative Science , 1968
Buku Teks
Martin, Brian, author
Freedom Press, 1993
Buku Teks
Nisbet, Robert A., author
Oxford University Press, 1970
Buku Teks