White, Ron
How computers work
Ziff-Davis Press, 1993
 Buku Teks
Dobson, Ann
How to Communicate at work
grolier international, 1999
 Buku Teks
Hospitals : what they are and how they work
Donald J. Griffin, editor
Jones & Bartlett Learning, 2011
 Buku Teks
Basic machines and how they work
prepared by Bureau of Naval Personnel
Dover Publications, 1997
 Buku Teks
Parker, Steve
How things work
Parragon, 2000
 Buku Referensi