Wilson, W. (1917). Why we are at war. Messages to the Congress. Harper and Brothers Publishers.
Cita Chicago Style (17a ed.)Wilson, Woodrow. Why We Are at War. Messages to the Congress. New York: Harper and Brothers Publishers, 1917.
Cita MLA (8a ed.)Wilson, Woodrow. Why We Are at War. Messages to the Congress. Harper and Brothers Publishers, 1917.
Precaución: Estas citas no son 100% exactas.