Dyfyniad APA

Johnson. Chipped Stone Technological Organization. University of Utah Press.

Dyfyniad Arddull Chicago

Johnson. Chipped Stone Technological Organization. University of Utah Press.

Dyfyniad MLA

Johnson. Chipped Stone Technological Organization. University of Utah Press.

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