Dyfyniad APA

Bennett, W. F. (1993). Nutrient deficiencies and toxicities in crop plants. APS.

Dyfyniad Arddull Chicago

Bennett, William F. Nutrient Deficiencies and Toxicities in Crop Plants. APS, 1993.

Dyfyniad MLA

Bennett, William F. Nutrient Deficiencies and Toxicities in Crop Plants. APS, 1993.

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