Epstein, S. D. (1991). Traces and their antecedents. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Epstein, Samuel David. Traces and Their Antecedents. New York: Oxford University Press, 1991.
Lua MLA (9ú heag.)Epstein, Samuel David. Traces and Their Antecedents. Oxford University Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.