Derbyshire, D., & Derbyshire, I. (1989). Politics in Britain: From Challaghan to Thatcher (Reprinted.). Chambers.
Citazione stile Chigago Style (17a edizione)Derbyshire, Denis, e Ian Derbyshire. Politics in Britain: From Challaghan to Thatcher. Reprinted. [Edinburgh]: Chambers, 1989.
Citatione MLA (9a ed.)Derbyshire, Denis, e Ian Derbyshire. Politics in Britain: From Challaghan to Thatcher. Reprinted. Chambers, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.