S. L. A. Marshall’s men against fire: New evidence regarding fire ratios
Right for the Wrong Reasons: S. L. A. Marshall and the Ratio of Fire in Korea
About Face: The Odyssey of an American Warrior § S. L. A. Marshall (SLAM)
https://history.army.mil/html/books/070/70-64/cmhPub_70-64.pdf
https://web.archive.org/web/20100304165140/http://www.libertary.com/books/reconciliation-road
https://www.canadianmilitaryhistory.ca/wp-content/uploads/2012/03/4-Engen-Marshall-under-fire.pdf
Wikipedia Bibliography: