Citazione Stile APA (7a Edizione)

Bullard, F. M. (1962). Volcanoes in history, in theory, in eruption. University of Texas Press.

Citazione stile Chigago Style (17a edizione)

Bullard, Fred M. Volcanoes in History, in Theory, in Eruption. [Austin]: University of Texas Press, 1962.

Citatione MLA (8a ed.)

Bullard, Fred M. Volcanoes in History, in Theory, in Eruption. University of Texas Press, 1962.