Gordon, R., Jacoby, M., & Fordham, M. (1993). Bridges: Metphor for psychic processes. Karnac Books.
Lua i Stíl Chicago (17ú heag.)Gordon, Rosemary, Mario Jacoby, agus Michael Fordham. Bridges: Metphor for Psychic Processes. London: Karnac Books, 1993.
Lua MLA (9ú heag.)Gordon, Rosemary, et al. Bridges: Metphor for Psychic Processes. Karnac Books, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.