Graham, H. D., & Gurr, T. R. (1969). Violence in America: historical and comparative perspectives: A report to the National Commission on the Causes and Prevention of Violence. For sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Chicago-viite (17. p.)Graham, Hugh D., ja Ted Robert Gurr. Violence in America: Historical and Comparative Perspectives: A Report to the National Commission on the Causes and Prevention of Violence. [Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969.
MLA-viite (8. p.)Graham, Hugh D., ja Ted Robert Gurr. Violence in America: Historical and Comparative Perspectives: A Report to the National Commission on the Causes and Prevention of Violence. For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969.