Lund, D. W. (1988). Police directed preventive patrol: Its effect upon personnel motivation. Univ. Microfilms International.
Chicago-Zitierstil (17. Ausg.)Lund, Dennis W. Police Directed Preventive Patrol: Its Effect upon Personnel Motivation. Ann Arbor, Mich: Univ. Microfilms International, 1988.
MLA-Zitierstil (8. Ausg.)Lund, Dennis W. Police Directed Preventive Patrol: Its Effect upon Personnel Motivation. Univ. Microfilms International, 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.