Cita APA (7a ed.)

Spergel, I., Oh, S., Alexander, A., Laseter, R., Kane, C., Regulus, T., . . . Chance, R. (1991). Executive Summary: Prototype Models. National Youth Gang Information Center.

Cita Chicago Style (17a ed.)

Spergel, Irving, Sandra Oh, Alba Alexander, Robert Laseter, Candice Kane, Thomas Regulus, Kenneth Ehrensaft, y Ron Chance. Executive Summary: Prototype Models. National Youth Gang Information Center, 1991.

Cita MLA (9a ed.)

Spergel, Irving, et al. Executive Summary: Prototype Models. National Youth Gang Information Center, 1991.