Koren, H. J. (1990). Essays on the Spiritan charism and on Spiritan history. Spiritus Press.
Lua i Stíl Chicago (17ú heag.)Koren, Henry J. Essays on the Spiritan Charism and on Spiritan History. Bethel Park, Pa.: Spiritus Press, 1990.
Lua MLA (8ú heag.)Koren, Henry J. Essays on the Spiritan Charism and on Spiritan History. Spiritus Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.