Cita APA (7a ed.)

Howell, J. C. (2012). Gangs in America's communities. SAGE Publications.

Cita Chicago Style (17a ed.)

Howell, James C. Gangs in America's Communities. Thousand Oaks, Calif [u.a.]: SAGE Publications, 2012.

Cita MLA (8a ed.)

Howell, James C. Gangs in America's Communities. SAGE Publications, 2012.