Dyfyniad APA

Willis K.J & McElwain, J. (2002). The evolution of plants. Oxford University Press.

Dyfyniad Arddull Chicago

Willis K.J and J.C McElwain. The Evolution of Plants. New York: Oxford University Press, 2002.

Dyfyniad MLA

Willis K.J and J.C McElwain. The Evolution of Plants. Oxford University Press, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.