APA (7th ed.) Zitazioa
Roth, J. (2008). The 20% solution: A practical guide to dramatic cost reduction in MROP procurement. Pegasus Books.
Chicago Style (17th ed.) Zitazioa
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Bloomington, IN: Pegasus Books, 2008.
MLA (9th ed.) Zitazioa
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Pegasus Books, 2008.
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