Cita APA (7th ed.)

HAGAN, F. E. (1997). Research methods in criminal justice and criminology. Allyn and Bacon.

Cita Chicago (17th ed.)

HAGAN, Frank E. Research Methods in Criminal Justice and Criminology. Boston: Allyn and Bacon, 1997.

Cita MLA (9th ed.)

HAGAN, Frank E. Research Methods in Criminal Justice and Criminology. Allyn and Bacon, 1997.