APA (7th ed.) Citation

Hagan, F. E. (2012). Essentials of research methods in criminal justice and criminology (3. ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Hagan, Frank E. Essentials of Research Methods in Criminal Justice and Criminology. 3. ed. Boston Munich [u.a.]: Prentice Hall, 2012.

MLA (8th ed.) Citation

Hagan, Frank E. Essentials of Research Methods in Criminal Justice and Criminology. 3. ed. Prentice Hall, 2012.