Cita APA (7a ed.)

Bullen, K. E. (1963). An introduction to the theory of seismology.

Cita Chicago Style (17a ed.)

Bullen, Keith Edward. An Introduction to the Theory of Seismology. Cambridge [Eng.] University Press, 1963.

Cita MLA (9a ed.)

Bullen, Keith Edward. An Introduction to the Theory of Seismology. 1963.