Dyfyniad APA

Cooke, G. W. (1967). The control of soil fertility. Crosby Lockwood.

Dyfyniad Arddull Chicago

Cooke, G. W. The Control of Soil Fertility. Londres: Crosby Lockwood, 1967.

Dyfyniad MLA

Cooke, G. W. The Control of Soil Fertility. Crosby Lockwood, 1967.

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