Dyfyniad APA

Vann. Last Day on Earth. University of Georgia Press.

Dyfyniad Arddull Chicago

Vann. Last Day on Earth. University of Georgia Press.

Dyfyniad MLA

Vann. Last Day on Earth. University of Georgia Press.

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