APA aipamena

Hradecký, P., & Rapprich, V. (2007). Historical Tephra-stratigraphy of the Cosigüina Volcano (Western Nicaragua).

Chicago Style aipamena

Hradecký, Petr, y Vladislav Rapprich. Historical Tephra-stratigraphy of the Cosigüina Volcano (Western Nicaragua). 2007.

MLA aipamena

Hradecký, Petr, y Vladislav Rapprich. Historical Tephra-stratigraphy of the Cosigüina Volcano (Western Nicaragua). 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.