एपीए उद्धरण

Lewis, N. D. C. (2004). Operational risk: Applied statistical methods for risk management. Hoboken, N.J: Wiley.

शिकागो स्टाइल उद्धरण

Lewis, Nigel Da Costa. Operational Risk: Applied Statistical Methods for Risk Management. Hoboken, N.J: Wiley, 2004.

एमएलए उद्धरण

Lewis, Nigel Da Costa. Operational Risk: Applied Statistical Methods for Risk Management. Hoboken, N.J: Wiley, 2004.