Gitlow, H., Oppenheim, A., & Oppenheim, R. (1995). Quality management: Tools and methods. Irwin.
Čikaški stil citiranja (17. izdanje)Gitlow, Howard, Alan Oppenheim, i Rosa Oppenheim. Quality Management: Tools and Methods. Burr Ridge, ILL: Irwin, 1995.
MLA način citiranja (9. izdanje)Gitlow, Howard, et al. Quality Management: Tools and Methods. Irwin, 1995.
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