APA aipamena

Chávez, J. A., Hernández, W., & Kopecky, L. (2011). PROBLEMATIC AND CURRENT KNOWLEDGE OF THE TIERRA BLANCA JOVEN TEPHRAS IN THE METROPOLITAN AREA OF SAN SALVADOR, EL SALVADOR.

Chicago Style aipamena

Chávez, José A., Walter Hernández, y Lubomir Kopecky. PROBLEMATIC AND CURRENT KNOWLEDGE OF THE TIERRA BLANCA JOVEN TEPHRAS IN THE METROPOLITAN AREA OF SAN SALVADOR, EL SALVADOR. 2011.

MLA aipamena

Chávez, José A., Walter Hernández, y Lubomir Kopecky. PROBLEMATIC AND CURRENT KNOWLEDGE OF THE TIERRA BLANCA JOVEN TEPHRAS IN THE METROPOLITAN AREA OF SAN SALVADOR, EL SALVADOR. 2011.