APA način citiranja

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.

Čikaški stil citiranja

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

MLA način citiranja

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