Nelson, W. (1956). Frank Duff, Recipient of the Marianist Award, 1956. eCommons.
Lua i Stíl Chicago (17ú heag.)Nelson, Wayne. Frank Duff, Recipient of the Marianist Award, 1956. eCommons, 1956.
Lua MLA (8ú heag.)Nelson, Wayne. Frank Duff, Recipient of the Marianist Award, 1956. eCommons, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.