Head, W. B. (1989). The hostage response: An examination of U.S. law enforcement practices concerning hostage incidents. Univ. Microfilms Internat.
Chicago-Zitierstil (17. Ausg.)Head, William B. The Hostage Response: An Examination of U.S. Law Enforcement Practices Concerning Hostage Incidents. Ann Arbor, Mich: Univ. Microfilms Internat, 1989.
MLA-Zitierstil (9. Ausg.)Head, William B. The Hostage Response: An Examination of U.S. Law Enforcement Practices Concerning Hostage Incidents. Univ. Microfilms Internat, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.