Earl, P. (1978). Personal and property protection: The executive's guide to security. M and M Association.
Chicago-Zitierstil (17. Ausg.)Earl, Philip. Personal and Property Protection: The Executive's Guide to Security. Los Angeles: M and M Association, 1978.
MLA-Zitierstil (8. Ausg.)Earl, Philip. Personal and Property Protection: The Executive's Guide to Security. M and M Association, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.