Dyfyniad APA

Heywood, V. H. (1971). Biology and chemistry of the umbelliferae. Academic Press.

Dyfyniad Arddull Chicago

Heywood, V. H. Biology and Chemistry of the Umbelliferae. Academic Press, 1971.

Dyfyniad MLA

Heywood, V. H. Biology and Chemistry of the Umbelliferae. Academic Press, 1971.

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