Cita APA (7a ed.)

PALMER, R., & COLTON, J. (1971). A history of the modern world.-- ed.4. Alfred A.Knopf.

Cita Chicago Style (17a ed.)

PALMER, R.R, y Joel COLTON. A History of the Modern World.-- Ed.4. New York: Alfred A.Knopf, 1971.

Cita MLA (9a ed.)

PALMER, R.R, y Joel COLTON. A History of the Modern World.-- Ed.4. Alfred A.Knopf, 1971.