Dyfyniad APA

Patten, C. (2008). What next?: Surviving the twenty-first century. Allen Lane.

Dyfyniad Arddull Chicago

Patten, Chris. What Next?: Surviving the Twenty-first Century. London: Allen Lane, 2008.

Dyfyniad MLA

Patten, Chris. What Next?: Surviving the Twenty-first Century. Allen Lane, 2008.

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