APA način citiranja (7. izdanje)
Okes, D. (2009). Root cause analysis: The core of problem solving and corrective action. ASQ Quality Press.
Čikaški stil citiranja (17. izdanje)
Okes, Duke. Root Cause Analysis: The Core of Problem Solving and Corrective Action. Milwaukee, Wisconsin: ASQ Quality Press, 2009.
MLA način citiranja (9. izdanje)
Okes, Duke. Root Cause Analysis: The Core of Problem Solving and Corrective Action. ASQ Quality Press, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.