William G Hopkins. (1995). Introduction to plant physiology. New York: John Wiley.
Dyfyniad Arddull ChicagoWilliam G Hopkins. Introduction to Plant Physiology. New York: John Wiley, 1995.
Dyfyniad MLAWilliam G Hopkins. Introduction to Plant Physiology. New York: John Wiley, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.