Cita APA (7th ed.)

Freund, F. T. (2007). Pre-earthquake signals – Part I: Deviatoric stresses turn rocks into a source of electric currents. Copernicus Publications.

Cita Chicago (17th ed.)

Freund, F. T. Pre-earthquake Signals – Part I: Deviatoric Stresses Turn Rocks into a Source of Electric Currents. Copernicus Publications, 2007.

Cita MLA (9th ed.)

Freund, F. T. Pre-earthquake Signals – Part I: Deviatoric Stresses Turn Rocks into a Source of Electric Currents. Copernicus Publications, 2007.