Beer ,. (1969). Modern British politics: A study of parties and pressure groups (2nd ed.). Faber.
Citazione stile Chigago Style (17a edizione)Beer. Modern British Politics: A Study of Parties and Pressure Groups. 2nd ed. London: Faber, 1969.
Citatione MLA (9a ed.)Beer. Modern British Politics: A Study of Parties and Pressure Groups. 2nd ed. Faber, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.