Watts, T. J. (1991). A select bibliography on security guards and other private police. Public administration series.
Chicago-Zitierstil (17. Ausg.)Watts, Tim J. "A Select Bibliography on Security Guards and Other Private Police." Public Administration Series 1991.
MLA-Zitierstil (9. Ausg.)Watts, Tim J. "A Select Bibliography on Security Guards and Other Private Police." Public Administration Series, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.