Dyfyniad APA

Payan Zelaya, F. A. (2005). Effects of Erythrina poeppigiana pruning residues on soil organic matter in organic coffee plantations.

Dyfyniad Arddull Chicago

Payan Zelaya, Fidel A. Effects of Erythrina Poeppigiana Pruning Residues On Soil Organic Matter in Organic Coffee Plantations. 2005.

Dyfyniad MLA

Payan Zelaya, Fidel A. Effects of Erythrina Poeppigiana Pruning Residues On Soil Organic Matter in Organic Coffee Plantations. 2005.

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