Dyfyniad APA

Samuelson, P. A. (1964). Economics: An introductory analysis. New York: McGraw-hill.

Dyfyniad Arddull Chicago

Samuelson, Paul Anthony. Economics: An Introductory Analysis. New York: McGraw-hill, 1964.

Dyfyniad MLA

Samuelson, Paul Anthony. Economics: An Introductory Analysis. New York: McGraw-hill, 1964.

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