एपीए उद्धरण

Locklin, P. D. (1960). Economics of transportation (5.).

शिकागो स्टाइल उद्धरण

Locklin, Philip D. Economics of Transportation. 5. Richard D Irwin Inc, Illinois, 1960.

एमएलए उद्धरण

Locklin, Philip D. Economics of Transportation. 5. 1960.