Cita APA (7a ed.)

Gurr, T. R. (1989). Violence in America. Sage.

Cita Chicago Style (17a ed.)

Gurr, Ted Robert. Violence in America. Newbury Park [u.a.]: Sage, 1989.

Cita MLA (8a ed.)

Gurr, Ted Robert. Violence in America. Sage, 1989.