Hinze, Jimmie W.
McGraw-Hill, 2011
Buku Teks
Burton, Steven J., editor
West Publishing Co., 1995
Buku Teks
Craswell, Richard
Oxford University Press, 1994
Buku Teks
Pickavance, Keith
Sweet & Maxwell, 2010
Buku Teks
Singhs KS., Harban
LexisNexis, 2011
Buku Teks