Cita APA (7a ed.)

Hagan, F. E. (2013). Research methods in criminal justice and criminology (9. ed.). Pearson Education Ltd.

Cita Chicago Style (17a ed.)

Hagan, Frank E. Research Methods in Criminal Justice and Criminology. 9. ed. Harlow]: Pearson Education Ltd, 2013.

Cita MLA (9a ed.)

Hagan, Frank E. Research Methods in Criminal Justice and Criminology. 9. ed. Pearson Education Ltd, 2013.