Giddens, Anthony, author
Cambridge Polity Press 1989,
Buku Teks
Nobbs, Jack
Macmillan Education, Ltd., 1989
Buku Teks
McGraw-Hill, 2003
Buku Teks
Finsterbusch, Kurt, author
McGraw-Hill, 2006
Buku Teks
Kurt Finsterbusch, editor
McGraw-Hill, 2007
Buku Teks