एपीए उद्धरण

McLean-Conner, P. (2009). Energy efficiency: Principles and practices. Tulsa, Okla: PennWell.

शिकागो स्टाइल उद्धरण

McLean-Conner, Penni. Energy Efficiency: Principles and Practices. Tulsa, Okla: PennWell, 2009.

एमएलए उद्धरण

McLean-Conner, Penni. Energy Efficiency: Principles and Practices. Tulsa, Okla: PennWell, 2009.