Smith, Mike (J. Mike), author
Oxford University Press, 1990
Buku Teks
edited by Mary Abbott
Routledge, 1996
Buku Teks
Rogers, Jenny, author
Open University Press, 2004
Buku Teks
Charlton, Ruth, author
Lawbook, 2004
Buku Teks
Wikrama Iryans Abidin, author
General Secretariat of the House of Representatives of the Republic of Indonesia and United Nations Development Programme, 2009
Buku Referensi