Cita APA

Aiuppa., A., Rotolo, S. G., & Villa, I. M. (2013). Stratigraphy, geochemistry and geochronology of a Quaternary pyroclastic sequence of the Chichontepec volcano, El Salvador. Universidad de Costa Rica.

Citación estilo Chicago

Aiuppa., A., S. G. Rotolo, y I. M. Villa. Stratigraphy, Geochemistry and Geochronology of a Quaternary Pyroclastic Sequence of the Chichontepec Volcano, El Salvador. Universidad de Costa Rica, 2013.

Cita MLA

Aiuppa., A., S. G. Rotolo, y I. M. Villa. Stratigraphy, Geochemistry and Geochronology of a Quaternary Pyroclastic Sequence of the Chichontepec Volcano, El Salvador. Universidad de Costa Rica, 2013.