Cita APA (7a ed.)

Tilley, N., & Hopkins, M. (1998). Business as usual: An evaluation of the small business and crime initiative Police research series.

Cita Chicago Style (17a ed.)

Tilley, Nick, y Matt Hopkins. "Business as Usual: An Evaluation of the Small Business and Crime Initiative." Police Research Series 1998.

Cita MLA (8a ed.)

Tilley, Nick, y Matt Hopkins. "Business as Usual: An Evaluation of the Small Business and Crime Initiative." Police Research Series, 1998.