Dyfyniad APA

Andrews, H. N. J. (1947). Ancient plants and the world they live in. Comstock.

Dyfyniad Arddull Chicago

Andrews, Henry Nathaniel Jr. Ancient Plants and the World They Live in. New York: Comstock, 1947.

Dyfyniad MLA

Andrews, Henry Nathaniel Jr. Ancient Plants and the World They Live in. Comstock, 1947.

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