APA (7th ed.) Citation

Barnett, A., Kleitman, D. J., & Larson, R. C. (19). On urban homicide: Working paper.

Chicago Style (17th ed.) Citation

Barnett, Arnold, Daniel J. Kleitman, and Richard C. Larson. On Urban Homicide: Working Paper. Cambridge, Mass, 19.

MLA (9th ed.) Citation

Barnett, Arnold, et al. On Urban Homicide: Working Paper. 19.