Lua APA (7ú heag.)
Pieper, J. (1999). The silence of St. Thomas: Three essays. St. Augustine's Press.
Lua i Stíl Chicago (17ú heag.)
Pieper, Josef. The Silence of St. Thomas: Three Essays. South Bend (Indiana): St. Augustine's Press, 1999.
Lua MLA (9ú heag.)
Pieper, Josef. The Silence of St. Thomas: Three Essays. St. Augustine's Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.