1. Crossby Philip B. Quality is Free: The Art of Marketing Quality Certain. Mentor Books New York NY 1980. Crossby Philip B. Quality is Free: The Art of Marketing Quality Certain. Mentor Books New York NY 1980.
2. Deming W.E. Out of the Crisis. MIT Press Cambridge Mass. 1986. Deming W.E. Out of the Crisis. MIT Press Cambridge Mass. 1986.
3. IEEE. Software Engineering Standars Third Efition. IEEE New York NY 1989. IEEE. Software Engineering Standars Third Efition. IEEE New York NY 1989.
4. Juran J. Quality Control Handbook 4th Edition. McGrww-Hill New York NY1988. Juran J. Quality Control Handbook 4th Edition. McGrww-Hill New York NY1988.
5. Butler K.L. The economic benefits of software process improvement. Crosstalk (July 1995) 14-17. Butler K.L. The economic benefits of software process improvement. Crosstalk (July 1995) 14-17.