Davis, M. (2005). Scientific papers and presentaiotns. San Diego: Academic Press.
Dyfyniad Arddull ChicagoDavis, Martha. Scientific Papers and Presentaiotns. San Diego: Academic Press, 2005.
Dyfyniad MLADavis, Martha. Scientific Papers and Presentaiotns. San Diego: Academic Press, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.