Portrayal of German nation in a Woodrow Wilson’s speech to Congress delivered on April 2, 1917

Please, use the speech https://www.americanyawp.com/reader/21-world-war-i/woodrow-wilson-requests-war-april-2-1917/ as a primary source.
Also, I need additional secondary sources to present background situation. If you have an access to those two books, please use them for this purpose:
1. Farwell, Byron. Over There: The United States in the Great War, 1917-1918. New York: W. W. Norton & Company, 1999.
2. Stevenson, David. The First World War And International Politics. New York: Oxford University Press, 1988.
If not, refer to up to three sources from JSTOR, or SAGE Journals. The choice of sources is up to you.
And do not forget abou using 17th Edition of Chicago Manual Style in formatting.
Thank you in advance!