Gitlow, H. S., Oppenheim, A. V., Oppenheim, R., Oppenheim, R., & Oppenheim, A. (1995). Quality management: Tools and methods for improvement (2nd ed.). Boston: McGraw-Hill/Irwin.
Παραπομπή Chicago StyleGitlow, Howard S., Alan V. Oppenheim, Rosa Oppenheim, Rosa Oppenheim, and Alan Oppenheim. Quality Management: Tools and Methods for Improvement. 2nd ed. Boston: McGraw-Hill/Irwin, 1995.
Παραπομπή MLAGitlow, Howard S., et al. Quality Management: Tools and Methods for Improvement. 2nd ed. Boston: McGraw-Hill/Irwin, 1995.
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