Dyfyniad APA

Roy,P N. (1986). International trade: Theory and practice. Wiley Eastern Limited.

Dyfyniad Arddull Chicago

Roy,P N. International Trade: Theory and Practice. New Delhi: Wiley Eastern Limited, 1986.

Dyfyniad MLA

Roy,P N. International Trade: Theory and Practice. Wiley Eastern Limited, 1986.

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