Annals of Botany. Oxford University Press.
Dyfyniad Arddull ChicagoAnnals of Botany. Oxford University Press.
Dyfyniad MLAAnnals of Botany. Oxford University Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Annals of Botany. Oxford University Press.
Dyfyniad Arddull ChicagoAnnals of Botany. Oxford University Press.
Dyfyniad MLAAnnals of Botany. Oxford University Press.