Clegg, H. A.
A history of British trade unions since 1889; Vol. I
Clarendon Press, 1964
 Buku Teks
The British trade union directory
edited and compiled by Wolodymyr Maksymiw
Longman, 1990
 Buku Referensi
McIlroy, John
Trade unions in Britain today
Manchester University Press , 1995
 Buku Teks
New horizons for the information profession : meeting the challenge of change
edited by Hilary Dyer and Gwyneth Tseng
Taylor Graham, 1988
 Buku Teks
Humphreys, Nick
Trade union law
Blackstone Press, 1999
 Buku Teks