Dyfyniad APA

Araya-Ulloa, A., & Calvo-Brenes, G. (2017). Ecological vulnerability and water quality diagnosis of the stream La Central, Pacayas de Alvarado, Costa Rica.

Dyfyniad Arddull Chicago

Araya-Ulloa, Andrea, y Guillermo Calvo-Brenes. Ecological Vulnerability and Water Quality Diagnosis of the Stream La Central, Pacayas De Alvarado, Costa Rica. 2017.

Dyfyniad MLA

Araya-Ulloa, Andrea, y Guillermo Calvo-Brenes. Ecological Vulnerability and Water Quality Diagnosis of the Stream La Central, Pacayas De Alvarado, Costa Rica. 2017.

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