Singer D. C., Upton R. P., . (1993). Guidelines for LaboratoryQuality Auditing : Quality and Reliability 39. New York: Marcel Dekker Inc.
Singer Donald C, Upton R P, . 1993. Guidelines for LaboratoryQuality Auditing : Quality and Reliability 39. New York: Marcel Dekker Inc.
Singer Donald C, Upton R P, . Guidelines for LaboratoryQuality Auditing : Quality and Reliability 39. New York: Marcel Dekker Inc. 1993.