Dyfyniad APA

McConnel, C. (2013). Economics (19th.). McGraw Hill.

Dyfyniad Arddull Chicago

McConnel, C.R. Economics. 19th. McGraw Hill, 2013.

Dyfyniad MLA

McConnel, C.R. Economics. 19th. McGraw Hill, 2013.

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