(1981). The interception of communications in Great Britain: Pres. to Parliament by the Prime Minister of Her Majesty, March 1981. H.M.S.O.
Chicago-Zitierstil (17. Ausg.)The Interception of Communications in Great Britain: Pres. to Parliament by the Prime Minister of Her Majesty, March 1981. London: H.M.S.O, 1981.
MLA-Zitierstil (8. Ausg.)The Interception of Communications in Great Britain: Pres. to Parliament by the Prime Minister of Her Majesty, March 1981. H.M.S.O, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.