INTERNATIONAL LABOUR OFFICE. (1951). PAYMENT BY RESULTS. OXFORD UNIVERSITY PRESS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रINTERNATIONAL LABOUR OFFICE. PAYMENT BY RESULTS. DELHI: OXFORD UNIVERSITY PRESS, 1951.
एमएलए (9वां संस्करण) प्रशस्ति पत्रINTERNATIONAL LABOUR OFFICE. PAYMENT BY RESULTS. OXFORD UNIVERSITY PRESS, 1951.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.