Dyfyniad APA

Sowell, T. (2007). Basic economics: A citizen's guide to the economy. Viva Books.

Dyfyniad Arddull Chicago

Sowell, Thomas. Basic Economics: A Citizen's Guide to the Economy. New Delhi: Viva Books, 2007.

Dyfyniad MLA

Sowell, Thomas. Basic Economics: A Citizen's Guide to the Economy. Viva Books, 2007.

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