Harwood, R. (2003). Chemistry (First South Asian Edition.). Cambridge University Press.
Dyfyniad Arddull ChicagoHarwood, Richard. Chemistry. First South Asian Edition. Cambridge: Cambridge University Press, 2003.
Dyfyniad MLAHarwood, Richard. Chemistry. First South Asian Edition. Cambridge University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.