Dyfyniad APA

Parkin, M., Powell, M., & Matthews, K. (2017). Economics (Tenth Edition.). Pearson.

Dyfyniad Arddull Chicago

Parkin, Michael, Melanie Powell, and Kent Matthews. Economics. Tenth Edition. New York: Pearson, 2017.

Dyfyniad MLA

Parkin, Michael, et al. Economics. Tenth Edition. Pearson, 2017.

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