Praagh, V. G., & Van Praagh, G. (1967). The discovery of the electric current. Published for the Nuffield Foundation by the Longmans/Penguin Books.
Lua i Stíl Chicago (17ú heag.)Praagh, Van G., agus Gordon Van Praagh. The Discovery of the Electric Current. London: Published for the Nuffield Foundation by the Longmans/Penguin Books, 1967.
Lua MLA (9ú heag.)Praagh, Van G., agus Gordon Van Praagh. The Discovery of the Electric Current. Published for the Nuffield Foundation by the Longmans/Penguin Books, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.