Udpa, S.R .
Quality circles: Progress through participation / Textual Documents S.R.Udpa. - 2 / . - New Delhi : Tata Mc-Graw Hill Publishing Company , 1992. -
Quality circles: Progress through participation / Textual Documents S.R.Udpa. - 2 / . - New Delhi : Tata Mc-Graw Hill Publishing Company , 1992. -