Cita APA (7a ed.)

Crawford, A., Blackburn, S., & Shepherd, P. (2005). Filling the void, connecting the pieces: An evaluation of neighbourhood and street wardens in Leeds. Centre for Criminal Justice Studies, University of Leeds.

Cita Chicago Style (17a ed.)

Crawford, Adam, Sarah Blackburn, y Peter Shepherd. Filling the Void, Connecting the Pieces: An Evaluation of Neighbourhood and Street Wardens in Leeds. Leeds: Centre for Criminal Justice Studies, University of Leeds, 2005.

Cita MLA (8a ed.)

Crawford, Adam, et al. Filling the Void, Connecting the Pieces: An Evaluation of Neighbourhood and Street Wardens in Leeds. Centre for Criminal Justice Studies, University of Leeds, 2005.