Cita APA (7a ed.)

Webb, B., & Laycock, G. (1992). Reducing crime on the London Underground: An evaluation of three pilot projects Paper.

Cita Chicago Style (17a ed.)

Webb, Barry, y Gloria Laycock. "Reducing Crime on the London Underground: An Evaluation of Three Pilot Projects." Paper 1992.

Cita MLA (8a ed.)

Webb, Barry, y Gloria Laycock. "Reducing Crime on the London Underground: An Evaluation of Three Pilot Projects." Paper, 1992.