Mason, Peter, author
Routledge, 1998
Buku Teks
Michael G. Grantham, editor
Routledge, 2011
Buku Teks
Church, James C., author
McGraw-Hill, 1979
Buku Referensi
Condliffe, Peter, author
Lexis lexis, 2012
Buku Teks
Dutson, Stuart, author
Global Law and Business, 2012
Buku Teks