एपीए उद्धरण

Méndez, J. C., & Bertsch, F. (2011). Total content and nutrients availability in two samples of ash eject by the Turrialba Volcano, Costa Rica in January 2010.

शिकागो स्टाइल उद्धरण

Méndez, Juan Carlos, और Floria Bertsch. Total Content and Nutrients Availability in Two Samples of Ash Eject By the Turrialba Volcano, Costa Rica in January 2010. 2011.

एमएलए उद्धरण

Méndez, Juan Carlos, और Floria Bertsch. Total Content and Nutrients Availability in Two Samples of Ash Eject By the Turrialba Volcano, Costa Rica in January 2010. 2011.