Karolyi, G. (2009). An excursion into the paranormal. Paranormal Phenomena Research Foundation.
Cita Chicago (17th ed.)Karolyi, George. An Excursion into the Paranormal. Paranormal Phenomena Research Foundation, 2009.
Cita MLA (9th ed.)Karolyi, George. An Excursion into the Paranormal. Paranormal Phenomena Research Foundation, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.