Dyfyniad APA

Krugman, P. (1991). Trade with Japan. Chicago: The University of Chicago.

Dyfyniad Arddull Chicago

Krugman, Paul. Trade With Japan. Chicago: The University of Chicago, 1991.

Dyfyniad MLA

Krugman, Paul. Trade With Japan. Chicago: The University of Chicago, 1991.

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