BRIN, D. (1994). The practice effect. Bantam Books.
Lua i Stíl Chicago (17ú heag.)BRIN, David. The Practice Effect. Bantam Books, 1994.
Lua MLA (9ú heag.)BRIN, David. The Practice Effect. Bantam Books, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.