Johns, A.T.
Peter Peregrinus, 1995
Buku Teks
Petrocelli, Tom, author
Prentice-Hall, 2006
Buku Teks
Smith, Martin, author
McGraw-Hill, 1993
Buku Teks
Paris Avgeriou, editor
[Springer-Verlag , ], 2012
eBooks
Radian Adi Nugraha, author
Fakultas Hukum Universitas Indonesia, 2012
UI - Skripsi Open