Coba jelasin Rujukan dari Bilik kebal dalam bahasa melayu dong

Steele, Sean P., Heists: Swindles, Stickups, and Robberies that Shocked the World. New York: Metrobooks, 1995. .

Tchudi, Stephen, Lock & Key: The Secrets of Locking Things Up, In, and Out. New York: Charles Scribner's Sons, 1993. .