Marder, M. P. (2011). Research methods for science. Cambridge University press.
Dyfyniad Arddull ChicagoMarder, Michael P. Research Methods for Science. New Delhi: Cambridge University press, 2011.
Dyfyniad MLAMarder, Michael P. Research Methods for Science. Cambridge University press, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.