1. 1971. The Concept of Corporate Strategy. Macmillan: New York.
2. 1956. An Introduction to Cybernetics. Chapman & Hall: London.
3. Banks of Colorado. 1994. Sheshunoff Information Services: Austin, TX.
4. Banks of Colorado. 1996. Sheshunoff Information Services: Austin, TX.
5. Banks of Colorado. 1997. Sheshunoff Information Services: Austin, TX.