Cita APA (7a ed.)

Penn, H. S., & Hegner, Q. (1973). Criminal histories of burglary and drug offenders in selected California counties 1971. Research report.

Cita Chicago Style (17a ed.)

Penn, Hugh S., y Quinton Hegner. "Criminal Histories of Burglary and Drug Offenders in Selected California Counties 1971." Research Report 1973.

Cita MLA (8a ed.)

Penn, Hugh S., y Quinton Hegner. "Criminal Histories of Burglary and Drug Offenders in Selected California Counties 1971." Research Report, 1973.