एपीए उद्धरण

Calvo-Brenes, G., & Araya-Ulloa, A. (2018). Evaluation of two water quality indices in several sites of the La Central stream, Pacayas de Alvarado, Costa Rica.

शिकागो स्टाइल उद्धरण

Calvo-Brenes, Guillermo, और Andrea Araya-Ulloa. Evaluation of Two Water Quality Indices in Several Sites of the La Central Stream, Pacayas De Alvarado, Costa Rica. 2018.

एमएलए उद्धरण

Calvo-Brenes, Guillermo, और Andrea Araya-Ulloa. Evaluation of Two Water Quality Indices in Several Sites of the La Central Stream, Pacayas De Alvarado, Costa Rica. 2018.