APA način citiranja (7. izdanje)
Roth, J. (2008). The 20% solution: A practical guide to dramatic cost reduction in MROP procurement. Pegasus Books.
Čikaški stil citiranja (17. izdanje)
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Bloomington, IN: Pegasus Books, 2008.
MLA način citiranja (9. izdanje)
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Pegasus Books, 2008.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.