Dyfyniad APA

American Chemical. (1990). Environmental injury to plants. New York: Academic.

Dyfyniad Arddull Chicago

American Chemical. Environmental Injury to Plants. New York: Academic, 1990.

Dyfyniad MLA

American Chemical. Environmental Injury to Plants. New York: Academic, 1990.

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