एपीए उद्धरण

Institute of purchasing & supply. (1945). Procurement. Institute of purchasing and supply.

शिकागो स्टाइल उद्धरण

Institute of purchasing & supply. Procurement. Burmingham: Institute of purchasing and supply, 1945.

एमएलए उद्धरण

Institute of purchasing & supply. Procurement. Institute of purchasing and supply, 1945.