Selley, Richard C., et al. Encyclopedia of geology. Amsterdam ; Boston : Elsevier Academic, [2005]
APA
Selley, R., Cocks, L., Plimer, I. & ScienceDirect (Online service). (2005). Encyclopedia of geology. Amsterdam ; Boston : Elsevier Academic.
Chicago
Selley, Richard C., L. R. M. Cocks, I. R. Plimer and ScienceDirect (Online service). Encyclopedia of geology. Amsterdam ; Boston : Elsevier Academic, [2005]