Johannes <Belethus>. (1976). Summa de ecclesiasticis officiis. Brepols.
Lua i Stíl Chicago (17ú heag.)Johannes <Belethus>. Summa De Ecclesiasticis Officiis. Turnholti: Brepols, 1976.
Lua MLA (8ú heag.)Johannes <Belethus>. Summa De Ecclesiasticis Officiis. Brepols, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.