Dyfyniad APA

Penn, R. (2016). The Man Who Made Things Out of Trees. Penguin.

Dyfyniad Arddull Chicago

Penn, Robert. The Man Who Made Things Out of Trees. Penguin, 2016.

Dyfyniad MLA

Penn, Robert. The Man Who Made Things Out of Trees. Penguin, 2016.

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