Cita APA (7th ed.)

Sigurdsson, H. (2000). Encyclopedia of volcanoes. Academic Press.

Cita Chicago (17th ed.)

Sigurdsson, Haraldur. Encyclopedia of Volcanoes. San Diego, California USA: Academic Press, 2000.

Cita MLA (9th ed.)

Sigurdsson, Haraldur. Encyclopedia of Volcanoes. Academic Press, 2000.