एपीए उद्धरण

Penson,John B. (1986). Introduction to agricultural economics. Prentice Hall.

शिकागो स्टाइल उद्धरण

Penson,John B. Introduction to Agricultural Economics. New Jersey: Prentice Hall, 1986.

एमएलए उद्धरण

Penson,John B. Introduction to Agricultural Economics. Prentice Hall, 1986.