APA način citiranja

Okal, E. A. (1987). Advances in volcanic seismology. Birkhauser Verlag.

Čikaški stil citiranja

Okal, Emile A. Advances in Volcanic Seismology. Boston: Birkhauser Verlag, 1987.

MLA način citiranja

Okal, Emile A. Advances in Volcanic Seismology. Birkhauser Verlag, 1987.