Dyfyniad APA

Jeffrey Richards. (2016). Visions of Yesterday. Routledge.

Dyfyniad Arddull Chicago

Jeffrey Richards. Visions of Yesterday. Oxfordshire: Routledge, 2016.

Dyfyniad MLA

Jeffrey Richards. Visions of Yesterday. Routledge, 2016.

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