APA aipamena

Butler, D. E., & Freeman, J. (1963). British political facts, 1900-1960. Macmillan.

Chicago Style aipamena

Butler, David E., and Jennie Freeman. British Political Facts, 1900-1960. London: Macmillan, 1963.

MLA aipamena

Butler, David E., and Jennie Freeman. British Political Facts, 1900-1960. Macmillan, 1963.