APA (7th ed.) Zitazioa

Rodwell, G. F. Etna: A History of the Mountain and of its Eruptions.

Chicago Style (17th ed.) Zitazioa

Rodwell, G. F. Etna: A History of the Mountain and of Its Eruptions.

MLA (9th ed.) Zitazioa

Rodwell, G. F. Etna: A History of the Mountain and of Its Eruptions.