Zimmerman & Gresham. (2007). Beyond hell and back: How America's Special Operations Forces became the world's greatest fighting unit. St. Martin's Press.
Chicago Style (17th ed.) CitationZimmerman and Gresham. Beyond Hell and Back: How America's Special Operations Forces Became the World's Greatest Fighting Unit. New York: St. Martin's Press, 2007.
MLA (8th ed.) CitationZimmerman and Gresham. Beyond Hell and Back: How America's Special Operations Forces Became the World's Greatest Fighting Unit. St. Martin's Press, 2007.
Warning: These citations may not always be 100% accurate.