Walker, R. (2007). UNDER THE MICROSCOPE DIGESTING. Grolier.
Dyfyniad Arddull ChicagoWalker, Richard. UNDER THE MICROSCOPE DIGESTING. Grolier, 2007.
Dyfyniad MLAWalker, Richard. UNDER THE MICROSCOPE DIGESTING. Grolier, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.