Citazione Stile APA (7a Edizione)

BUTLER, D., & Butler, D. . a. S. (1980). British political facts, 1900- 1967 (5th ed.). Palgrave Macmillan.

Citazione stile Chigago Style (17a edizione)

BUTLER, David, e David and Sloman Butler. British Political Facts, 1900- 1967. 5th ed. London: Palgrave Macmillan, 1980.

Citatione MLA (9a ed.)

BUTLER, David, e David and Sloman Butler. British Political Facts, 1900- 1967. 5th ed. Palgrave Macmillan, 1980.