Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.