American Chemical. (1990). Environmental injury to plants. New York: Academic.
Dyfyniad Arddull ChicagoAmerican Chemical. Environmental Injury to Plants. New York: Academic, 1990.
Dyfyniad MLAAmerican Chemical. Environmental Injury to Plants. New York: Academic, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.