Political History of Northern Ireland since Partition
open_in_newNational Archives
Home Rule : Government of Ireland Amendment Bill
open_in_newdocument, 23 April 1918
Hansard
Government of Ireland Bill Debate – Chief Secretary of Ireland
open_in_newdebate, 29 March 1920
Bodleian Library blog
100 years ago: Constitutional Crisis and the Parliament Act of 1911
open_in_newarticle, 2011