Further your research about the Civil War
Websites
British History Online provides digital versions of:
The Lords and Commons Journals for this period
Samuel Rushworth's Historical Collections of Private Passages of State (8 vols.) containing state documents 1618-48
Acts and Ordinances of the Interregnum, containing the legislation passed 1642-60
State Papers of John Thurloe, (7 vols.), the state documents of Cromwell's secretary of state, 1652-8 and others
Printed primary sources
S.R. Gardiner, 'Constitutional Documents of the Puritan Revolution', 3rd edition, (Oxford, 1906)
J.P. Kenyon, 'The Stuart Constitution 1603-1688: Documents and Commentary', 2nd edition, (Cambridge, 1986)
Edward Hyde, Earl of Clarendon, 'The History of the Rebellion and Civil Wars in England', 6 vols, (London, 1888)
Selections printed in Edward Hyde, Earl of Clarnedon, 'The History of the Rebellion', edition. Paul Seaward, (Oxford, 2009)
Other books
S.R. Gardiner, 'History of England from the Accession of James I to the Outbreak of Civil War, 1603-42', 10 vols, (1883-4)
S.R. Gardiner, 'History of the Great Civil War', 4 vols, 1893, S.R. Gardiner, 'History of the Commonwealth and Protectorate', 3 vols, (1894-1901)
Michael Braddick, ‘God's Fury, England's Fire: A New History of the English Civil Wars', (London, 2009)
David L. Smith, 'The Stuart Parliaments 1603-89', (London, 1999)
Conrad Russell, 'Parliaments and English Politics, 1621-1629', (1979)
Conrad Russell, 'Unrevolutionary England, 1603-42', (1990)
Conrad Russell, 'The Fall of the British Monarchies, 1637-42' , (1991)
Richard P.Cust, 'Charles I: A Political Life', (2005)
Elizabeth Read Foster, 'The House of Lords, 1603-49: Structures, Procedure and the Nature of its Business', (1983)
J.S.A. Adamson, 'The Noble Revolt: The Overthrow of Charles I' , (London, 2008)
(And many articles by J.S.A. Adamson on role of the Lords in the Civil War)
Mark Kishlansky, 'Parliamentary Selection: Social and Political choice in Early modern England', (Cambridge, 1986)
G.E. Aylmer, 'The Levellers in the English Revolution', (1975)
David Underdown, 'Pride's Purge: Politics in the Puritan Revolution', (1971)
Blair Worden, 'The Rump Parliament, 1648-53', (Oxford, (1974)
Sean Kelsey, 'Inventing a Republic: The Political Culture of the English Commonwealth, 1649-53', (Manchester, 1997)
Patrick Little and David L. Smith, 'Parliaments and Politics during the Cromwellian Protectorate', (Cambridge, 2007)
C.V. Wedgwood, 'The King's Peace, 1637-41'
C.V. Wedgwood, 'The King's War, 1641-47'