Schlegel, S. A. (2007). Science, spirits and common sense: Thee Espiritistas of Upi. Tambara.
Lua i Stíl Chicago (17ú heag.)Schlegel, Stuart A. "Science, Spirits and Common Sense: Thee Espiritistas of Upi." Tambara 2007.
Lua MLA (9ú heag.)Schlegel, Stuart A. "Science, Spirits and Common Sense: Thee Espiritistas of Upi." Tambara, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.