Dyfyniad APA

Richardson, J. D. (1993). Sizing up U. S. export disincentives. Institute for International Economics.

Dyfyniad Arddull Chicago

Richardson, J. David. Sizing Up U. S. Export Disincentives. Washington, D. C: Institute for International Economics, 1993.

Dyfyniad MLA

Richardson, J. David. Sizing Up U. S. Export Disincentives. Institute for International Economics, 1993.

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