Cita APA (7a ed.)

Ayling, S. (1964). Portraits of power: An introduction to twentieth-century history. Through the lives of seventeen great political leaders. Barnes & Noble Books.

Cita Chicago Style (17a ed.)

Ayling, S.E. Portraits of Power: An Introduction to Twentieth-century History. Through the Lives of Seventeen Great Political Leaders. New York: Barnes & Noble Books, 1964.

Cita MLA (9a ed.)

Ayling, S.E. Portraits of Power: An Introduction to Twentieth-century History. Through the Lives of Seventeen Great Political Leaders. Barnes & Noble Books, 1964.