एपीए उद्धरण

Bravo Chacón, J. (1981). Contamination by waste from the Cañas riverbed.

शिकागो स्टाइल उद्धरण

Bravo Chacón, Juan. Contamination By Waste From the Cañas Riverbed. 1981.

एमएलए उद्धरण

Bravo Chacón, Juan. Contamination By Waste From the Cañas Riverbed. 1981.