APA aipamena

(2011). EARTHQUAKE SPECTRA February-August 2011. EERI.

Chicago Style aipamena

EARTHQUAKE SPECTRA February-August 2011. EERI, 2011.

MLA aipamena

EARTHQUAKE SPECTRA February-August 2011. EERI, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.