Williams, A. (2013). Research: Improve your reading and referencing skills. HarperCollins.
Dyfyniad Arddull ChicagoWilliams, Anneli. Research: Improve Your Reading and Referencing Skills. London: HarperCollins, 2013.
Dyfyniad MLAWilliams, Anneli. Research: Improve Your Reading and Referencing Skills. HarperCollins, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.