एपीए उद्धरण

(1971). works,machinery and rolling stock programmes of railways for 1971-72. Ministry of Railways.

शिकागो स्टाइल उद्धरण

Works,machinery and Rolling Stock Programmes of Railways for 1971-72. New Delhi: Ministry of Railways, 1971.

एमएलए उद्धरण

Works,machinery and Rolling Stock Programmes of Railways for 1971-72. Ministry of Railways, 1971.