Cita APA (7a ed.)

Keys, P. (1995). Understanding the process of operational research: Collected readings. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Keys, Paul. Understanding the Process of Operational Research: Collected Readings. Chichester [etc.]: John Wiley & Sons, 1995.

Cita MLA (9a ed.)

Keys, Paul. Understanding the Process of Operational Research: Collected Readings. John Wiley & Sons, 1995.