Dyfyniad APA

Maps.com (Firm) & ebrary, Inc. (1999). The spread of agriculture. Maps.com.

Dyfyniad Arddull Chicago

Maps.com (Firm) and Inc ebrary. The Spread of Agriculture. [S.l.]: Maps.com, 1999.

Dyfyniad MLA

Maps.com (Firm) and Inc ebrary. The Spread of Agriculture. Maps.com, 1999.

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