Sandra Holmes. (1983). Outline of plant classification. London: Longman.
Dyfyniad Arddull ChicagoSandra Holmes. Outline of Plant Classification. London: Longman, 1983.
Dyfyniad MLASandra Holmes. Outline of Plant Classification. London: Longman, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.