Cita APA

Bullard, F. M. n. 1., & Bullard, F. M. n. 1. (1973). Volcanoes; in history, in theory, in eruption. Austin: University of Texas Press.

Citación estilo Chicago

Bullard, Fred Mason n. 1901, y Fred Mason n. 1901 Bullard. Volcanoes; in History, in Theory, in Eruption. Austin: University of Texas Press, 1973.

Cita MLA

Bullard, Fred Mason n. 1901, y Fred Mason n. 1901 Bullard. Volcanoes; in History, in Theory, in Eruption. Austin: University of Texas Press, 1973.