MLA

Simpson, Randolph Linsly, 1927-1992. Sergeant William O. Ross and Corporal Duke. L. Slaughter, Battery "B" 351st Field Artillery. "With the 351st in France (A Diary)", published by The Afro-American Company, Baltimore. Red paper covers, 7 x 5-1/2. Box 37, folder 1139. 1918. https://collections.library.yale.edu/catalog/16172750.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 37, folder 1139"])(1918)[Sergeant William O. Ross and Corporal Duke. L. Slaughter, Battery "B" 351st Field Artillery. "With the 351st in France (A Diary)", published by The Afro-American Company, Baltimore. Red paper covers, 7 x 5-1/2]. https://collections.library.yale.edu/catalog/16172750.