1) Quality planning and analysis : from product development through use / J.M. Juran, Frank M. Gryna. - 3rd ed. / prepared by Frank M. Gryna, intern. ed.. - New York : McGraw-Hill, 1993,il. ISBN 0-07-112992-8
2) Total quality control / A.V. Feigenbaum. - 3rd ed., rev.. - New York : McGraw-Hill, 1991 - xxvii, : il. ISBN 0-07-112612-0