Bullen, K. E. 1., & Bullen, K. E. 1. (1976). An Introduction to the theory of seismology (3. edition --.). London, Sydney: Cambridge University Press.
Chicago Style CitationBullen, Keith Edward 1906-, and Keith Edward 1906- Bullen. An Introduction to the Theory of Seismology. 3. edition --. London, Sydney: Cambridge University Press, 1976.
MLA CitationBullen, Keith Edward 1906-, and Keith Edward 1906- Bullen. An Introduction to the Theory of Seismology. 3. edition --. London, Sydney: Cambridge University Press, 1976.
Warning: These citations may not always be 100% accurate.