Dyfyniad APA

Pearson,Charles, & Anthony,Pryor. Environment: North and south. John Wiley & Sons.

Dyfyniad Arddull Chicago

Pearson,Charles, and Anthony,Pryor. Environment: North and South. New York: John Wiley & Sons.

Dyfyniad MLA

Pearson,Charles, and Anthony,Pryor. Environment: North and South. John Wiley & Sons.

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