Lua APA (7ú heag.)
Roth, J. (2008). The 20% solution: A practical guide to dramatic cost reduction in MROP procurement. Pegasus Books.
Lua i Stíl Chicago (17ú heag.)
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Bloomington, IN: Pegasus Books, 2008.
Lua MLA (9ú heag.)
Roth, Joel. The 20% Solution: A Practical Guide to Dramatic Cost Reduction in MROP Procurement. Pegasus Books, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.