Legal Works:
* "Cases and Materials on Trial Practice" (1955)
* "Military Law in Action: Cases and Materials on the Law of War and Military Jurisdiction" (1961)
* "Military Law in Action: Cases and Materials on the Law of War and Military Jurisdiction" (1965)
* "The Legal Aspects of Military Procurement: A Casebook" (1969)
* "Criminal Justice: Text and Cases on the Administration of Justice" (1970)
Military History:
* "The Unseen Crisis: The Untold Story of the Fighting in Vietnam 1954–1964" (1980)
* "The Unseen Crisis: The Untold Story of the Fighting in Vietnam 1964–1966" (1983)
* "The Unseen Crisis: The Untold Story of the Fighting in Vietnam 1966–1972" (1987)
* "The Unseen Crisis: The Untold Story of the Fighting in Vietnam 1972–1975" (1990)
* "Battling for Saigon: The Vietnam Tet Offensive 1968" (1995)
He also wrote several other books and articles, including:
* "Military Justice in the United States" (1963)
* "The Military Law in Action: Cases and Materials on the Law of War and Military Jurisdiction" (1965)
* "The Legal Aspects of Military Procurement: A Casebook" (1969)
* "Criminal Justice: Text and Cases on the Administration of Justice" (1970)
* "The Unseen Crisis: The Untold Story of the Fighting in Vietnam 1954–1975" (1992)
Appleman's writing is characterized by his clear and engaging style, as well as his deep understanding of the legal and military systems. His books and articles have been widely read and cited by scholars and practitioners in both fields.