Cita APA (7a ed.)

Spergel, I. A. (1992). General Community Design Technical Assistance Manual. National Youth Gang Information Center.

Cita Chicago Style (17a ed.)

Spergel, Irving A. General Community Design Technical Assistance Manual. National Youth Gang Information Center, 1992.

Cita MLA (9a ed.)

Spergel, Irving A. General Community Design Technical Assistance Manual. National Youth Gang Information Center, 1992.