एपीए उद्धरण

United Nations Industrial Development Organization. (1972). The manufacture and utilizatin of portland cement. New York: United Nations.

शिकागो स्टाइल उद्धरण

United Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.

एमएलए उद्धरण

United Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.