- Author: Michael Howard
- Language: English
- Year: 1986
- Author: Michael Howard
- Language: Spanish
- Year: 1999
- Author: Michael Howard
- Language: Spanish
- Year: 2002
- Author: John Viega & David LeBlanc & Michael Howard
- Language: English
- Year: 2010
- Author: Michael Howard
- Language: English
- Year: 15
- Author: Michael Howard
- Language: English
- Year: 2013
- Author: Michael Howard
- Language: English
- Year: 1979
- Author: Sir Michael Howard Dr. George Andreopoulos Mark R. Shulman
- Language: English
- Year: 1994
- Author: Michael Howard (auth.)
- Language: English
- Year: 1983