एपीए उद्धरण

Halm, G. N. (1968). Economic systems: A comparative analysis. Oxford and IBH Publishing Company Pvt Ltd.

शिकागो स्टाइल उद्धरण

Halm, George N. Economic Systems: A Comparative Analysis. New Delhi: Oxford and IBH Publishing Company Pvt Ltd, 1968.

एमएलए उद्धरण

Halm, George N. Economic Systems: A Comparative Analysis. Oxford and IBH Publishing Company Pvt Ltd, 1968.