APA aipamena

Rapprich, V., Hernández, W., & Erban, V. (2006). Geology of the Metapán volcanic field NW El Salvador.

Chicago Style aipamena

Rapprich, Vladislav, Walter Hernández, y Vojtěch Erban. Geology of the Metapán Volcanic Field NW El Salvador. 2006.

MLA aipamena

Rapprich, Vladislav, Walter Hernández, y Vojtěch Erban. Geology of the Metapán Volcanic Field NW El Salvador. 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.