Bullen, K. E., & Bolt, B. A. (1985). Introduction to the theory of seismology. Cambridge University Press.
Dyfyniad Arddull ChicagoBullen, K. E., and Bruce A. Bolt. Introduction to the Theory of Seismology. New York: Cambridge University Press, 1985.
Dyfyniad MLABullen, K. E., and Bruce A. Bolt. Introduction to the Theory of Seismology. Cambridge University Press, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.