Hopkins, W. G. (1999). Introduction to plant physiology (2nd ed.). New York: John Wiley and Sons.
Dyfyniad Arddull ChicagoHopkins, William G. Introduction to Plant Physiology. 2nd ed. New York: John Wiley and Sons, 1999.
Dyfyniad MLAHopkins, William G. Introduction to Plant Physiology. 2nd ed. New York: John Wiley and Sons, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.