Jacobs, G., & Macfarlane, R. (1990). The vital corporation: How American businesses - large and small - double profits in two years or less. Prentice-Hall.

Jacobs, Garry, and Robert Macfarlane. The Vital Corporation: How American Businesses - Large and Small - Double Profits in Two Years or Less. Englewood Cliffs, N.J.: Prentice-Hall, 1990.

Jacobs, Garry, and Robert Macfarlane. The Vital Corporation: How American Businesses - Large and Small - Double Profits in Two Years or Less. Prentice-Hall, 1990.