एपीए उद्धरण

Fried. (2008). The measurement of productive efficiency and productivity change. Oxford.

शिकागो स्टाइल उद्धरण

Fried. The Measurement of Productive Efficiency and Productivity Change. Oxford, 2008.

एमएलए उद्धरण

Fried. The Measurement of Productive Efficiency and Productivity Change. Oxford, 2008.