एपीए उद्धरण

Pratt, J. (1980). Growth of a refining region. Jai press.

शिकागो स्टाइल उद्धरण

Pratt, J.A. Growth of a Refining Region. Jai press, 1980.

एमएलए उद्धरण

Pratt, J.A. Growth of a Refining Region. Jai press, 1980.