Cita APA

Bullard, F. M. (1962). Volcanoes In History, in Eruption. UTP.

Chicago Edition Citation

Bullard, Fred M. Volcanoes In History, in Eruption. London: UTP, 1962.

Cita MLA

Bullard, Fred M. Volcanoes In History, in Eruption. UTP, 1962.

Atenció: Aquestes cites poden no estar 100% correctes.