Lewis, W. (1976). Peter John Olivi, prophet of the year 2000: Ecclesiology and eschatology in the Lectura super Apocalipsim; introduction to a critical edition of the text.
Lua i Stíl Chicago (17ú heag.)Lewis, Warren. Peter John Olivi, Prophet of the Year 2000: Ecclesiology and Eschatology in the Lectura Super Apocalipsim; Introduction to a Critical Edition of the Text. 1976.
Lua MLA (8ú heag.)Lewis, Warren. Peter John Olivi, Prophet of the Year 2000: Ecclesiology and Eschatology in the Lectura Super Apocalipsim; Introduction to a Critical Edition of the Text. 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.