Perry, P. M. (1976). Security for schools and centers: How to safeguard personnel and participants from thievery, fire, and attack. Creative Book.
Chicago-Zitierstil (17. Ausg.)Perry, Phillip M. Security for Schools and Centers: How to Safeguard Personnel and Participants from Thievery, Fire, and Attack. Sacramento, Calif: Creative Book, 1976.
MLA-Zitierstil (8. Ausg.)Perry, Phillip M. Security for Schools and Centers: How to Safeguard Personnel and Participants from Thievery, Fire, and Attack. Creative Book, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.