Cita APA (7a ed.)

Ketterman, T. (1979). Directory of criminal justice information sources (3. ed.). National Criminal Justice Reference Service.

Cita Chicago Style (17a ed.)

Ketterman, Thomas. Directory of Criminal Justice Information Sources. 3. ed. Rockville, Md: National Criminal Justice Reference Service, 1979.

Cita MLA (9a ed.)

Ketterman, Thomas. Directory of Criminal Justice Information Sources. 3. ed. National Criminal Justice Reference Service, 1979.