M25 private finance contract : nineteenth report of session 2010-11 : report, together with formal minutes, oral and written evidence /
Great Britain.Parliament.House of Commons.Committee of Public Accounts.
Great Britain.Parliament.(Session 2010-11).House of Commons.
London : Stationery Office,
2011.
The National Audit Office report on this topic published as HC 566, session 2010-11 (ISBN 9780102965544).