Groothuis, D. (1986). Unmasking the new age (ed.). Inter Varsity Press.
Lua i Stíl Chicago (17ú heag.)Groothuis, Douglas. Unmasking the New Age. ed. Illinois: Inter Varsity Press, 1986.
Lua MLA (9ú heag.)Groothuis, Douglas. Unmasking the New Age. ed. Inter Varsity Press, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.