Silverman, L. L., & Propst, A. L. (1999). Critical shift: The future of quality in organizational performance. ASQ Quality Press.
Lua i Stíl Chicago (17ú heag.)Silverman, Lori L., agus Annabeth L. Propst. Critical Shift: The Future of Quality in Organizational Performance. Milwaukee: ASQ Quality Press, 1999.
Lua MLA (9ú heag.)Silverman, Lori L., agus Annabeth L. Propst. Critical Shift: The Future of Quality in Organizational Performance. ASQ Quality Press, 1999.
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