Dyfyniad APA

Howard, E. W. (1969). Chemicals from nature. Published for the Nuffield Foundation by the Longmans/Penguin Books.

Dyfyniad Arddull Chicago

Howard, E. W. Chemicals from Nature. London: Published for the Nuffield Foundation by the Longmans/Penguin Books, 1969.

Dyfyniad MLA

Howard, E. W. Chemicals from Nature. Published for the Nuffield Foundation by the Longmans/Penguin Books, 1969.

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