APA استشهاد

Butler, D., & Freeman, J. (1968). British Political Facts 1900 - 1967 (2nd ed.). Macmillan.

استشهاد بنمط شيكاغو

Butler, David, و Jennie Freeman. British Political Facts 1900 - 1967. 2nd ed. London: Macmillan, 1968.

MLA استشهاد

Butler, David, و Jennie Freeman. British Political Facts 1900 - 1967. 2nd ed. Macmillan, 1968.