Anthropology: "War and Gender" in Carol R. Ember and Melvin Ember, eds. Encyclopedia of Sex and Gender: Men and Women in the World's Cultures. Kluwer/Plenum and Human Resources Area Files, 2003.
Anthropology: Panel on precontact North American warfare at the American Anthropological Association conference, Chicago, November 2003, discussant.
Gender Studies: "War" in Michael S. Kimmel and Amy Aronson, eds., Encyclopedia of Men and Masculinities, Santa Barbara: ABC-CLIO, 2004.
Economic History: "War and Economic History" in Joel Mokyr, ed., The Oxford Encyclopedia of Economic History, 2003.
Political Economy: The Real Price of War: How You Pay for the War on Terror [tradebook], New York University Press, Sept. 2004.
International Relations:
"The Worldwide Lull in War" [Op Ed] (CS Monitor 5/14/02: 9).
International Relations, Eighth Edition [textbook], NY: Longman, 2008 [forthcoming July 2007; coauthor Jon C. Pevehouse].
War and Gender: How Gender Shapes the War System and Vice Versa [book]