Acton, J. E. E. D. A., & Himmelfarb, G. (1955). Essays on freedom and power. Meridian.
Cita Chicago (17th ed.)Acton, John Emerich Edward Dalberg Acton, i Gertrude Himmelfarb. Essays on Freedom and Power. New York: Meridian, 1955.
Cita MLA (8th ed.)Acton, John Emerich Edward Dalberg Acton, i Gertrude Himmelfarb. Essays on Freedom and Power. Meridian, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.