Holt, J.C.
Magna carta
Cambridge University Press, 1992
 Buku Teks
Mill, John Stuart
On liberty and utilitarianism
David Campbell Publisher, 1992
 Buku Referensi
Walker, Patrick Gordon
Restatement of liberty
Hutchinson & Company, 1951
 Buku Teks SO
Handlin, Oscar
The dimensions of liberty
Atheneum, 1966
 Buku Teks SO
Jones, J.A.P.
King John and Magna Carta
Longman, 1971
 Buku Teks SO