एपीए उद्धरण

Gulvin, H. E. (1953). Farm Engines and Tractors. McGraw Hill Book Co., Inc.

शिकागो स्टाइल उद्धरण

Gulvin, Harold E. Farm Engines and Tractors. New York: McGraw Hill Book Co., Inc, 1953.

एमएलए उद्धरण

Gulvin, Harold E. Farm Engines and Tractors. McGraw Hill Book Co., Inc, 1953.