The Penguin illustrated history of Britain & Ireland :
[from earliest times to the present day] /
consultant editors, Barry Cunliffe ... [et al.].

APA Citation

Cunliffe, B. W. (2004). The Penguin illustrated history of Britain & Ireland: [from earliest times to the present day]. London: Penguin.

MLA Citation

Cunliffe, Barry W. The Penguin Illustrated History of Britain & Ireland: [from Earliest Times to the Present Day]. London: Penguin, 2004.

Warning: These citations may not always be complete (especially for serials).