Citazione Stile APA (7a Edizione)

Graham, H. D., & Gurr, T. R. (1979). Violence in America: Historical & comparative perspectives (Rev. ed.). Sage Publications.

Citazione stile Chigago Style (17a edizione)

Graham, Hugh D., e Ted Robert Gurr. Violence in America: Historical & Comparative Perspectives. Rev. ed. Beverly Hills, Calif.: Sage Publications, 1979.

Citatione MLA (8a ed.)

Graham, Hugh D., e Ted Robert Gurr. Violence in America: Historical & Comparative Perspectives. Rev. ed. Sage Publications, 1979.