Evans, R., & Ellis, R. (1997). Police cautioning in the 1990s. Research findings, 52, 1-4.
Cita Chicago Style (17a ed.)Evans, Roger, y Rachel Ellis. "Police Cautioning in the 1990s." Research Findings 52 (1997): 1-4.
Cita MLA (9a ed.)Evans, Roger, y Rachel Ellis. "Police Cautioning in the 1990s." Research Findings, 52, 1997, pp. 1-4.
Precaución: Estas citas no son 100% exactas.