Kriegel, R. J., & Patler, L. (1991). If it ain't broke-- break it!: And other unconventional wisdom for a changing business world. Warner Books.
Chicago-viite (17. p.)Kriegel, Robert J., ja Louis Patler. If It Ain't Broke-- Break It!: And Other Unconventional Wisdom for a Changing Business World. New York: Warner Books, 1991.
MLA-viite (9. p.)Kriegel, Robert J., ja Louis Patler. If It Ain't Broke-- Break It!: And Other Unconventional Wisdom for a Changing Business World. Warner Books, 1991.
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