Dyfyniad APA

Millar,Charles Ernest. (2004). Soil Fertility. Biotech Books.

Dyfyniad Arddull Chicago

Millar,Charles Ernest. Soil Fertility. Delhi: Biotech Books, 2004.

Dyfyniad MLA

Millar,Charles Ernest. Soil Fertility. Biotech Books, 2004.

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