APA (7th ed.) Citation

Bullen, K. E. (1963). An introduction to the theory of seismology (3d ed.). University Press.

Chicago Style (17th ed.) Citation

Bullen, K. E. An Introduction to the Theory of Seismology. 3d ed. Cambridge [Eng.]: University Press, 1963.

MLA (9th ed.) Citation

Bullen, K. E. An Introduction to the Theory of Seismology. 3d ed. University Press, 1963.