Dyfyniad APA

(1949). Export control. Washington: United States Goverment Printing Office.

Dyfyniad Arddull Chicago

Export Control. Washington: United States Goverment Printing Office, 1949.

Dyfyniad MLA

Export Control. Washington: United States Goverment Printing Office, 1949.

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