Cita APA (7a ed.)

Farrell, G., & Clark, K. (2004). What does the world spend on criminal justice? HEUNI papers.

Cita Chicago Style (17a ed.)

Farrell, Graham, y Ken Clark. "What Does the World Spend on Criminal Justice?" HEUNI Papers 2004.

Cita MLA (9a ed.)

Farrell, Graham, y Ken Clark. "What Does the World Spend on Criminal Justice?" HEUNI Papers, 2004.