Cita APA

Ayling, S. (1961). Portraits of power: An introduction to twentieth century history (5th ed.). George G Harrap.

Chicago Edition Citation

Ayling, S.E. Portraits of Power: An Introduction to Twentieth Century History. 5th ed. London: George G Harrap, 1961.

Cita MLA

Ayling, S.E. Portraits of Power: An Introduction to Twentieth Century History. 5th ed. George G Harrap, 1961.