Cita APA (7a ed.)

Spergel, I. A., Oh, S., Simmons, E., Alexander, A., Ross, R., Kane, C., . . . Curry, D. (1990). Executive Summary, Stage 1: Assessment. National Youth Gang Information Center.

Cita Chicago Style (17a ed.)

Spergel, Irving A., Sandra Oh, Edwina Simmons, Alba Alexander, Ruth Ross, Candice Kane, Ron Chance, y David Curry. Executive Summary, Stage 1: Assessment. National Youth Gang Information Center, 1990.

Cita MLA (9a ed.)

Spergel, Irving A., et al. Executive Summary, Stage 1: Assessment. National Youth Gang Information Center, 1990.