एपीए उद्धरण

Dept. of Agriculture. (1970). Contours of change. [Washington: For sale by the Supt. of Docs..

शिकागो स्टाइल उद्धरण

Dept. of Agriculture. Contours of Change. [Washington: For sale by the Supt. of Docs., 1970.

एमएलए उद्धरण

Dept. of Agriculture. Contours of Change. [Washington: For sale by the Supt. of Docs., 1970.