Dyfyniad APA

(1992). Birla Economic Research Foundation. Economic Research Division: Birla Economic Research Foundation. Allied.

Dyfyniad Arddull Chicago

Birla Economic Research Foundation. Economic Research Division: Birla Economic Research Foundation. New Delhi.: Allied, 1992.

Dyfyniad MLA

Birla Economic Research Foundation. Economic Research Division: Birla Economic Research Foundation. Allied, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.