URL: https://www.aomin.org/aoblog/debate/debate-do-the-catholic-churchs-teachings-on-mary-constitute-authentic-christian-doctrine-peter-d-williams-london-oratory-in-st-wilfrids-hall-london-england-5-15-2017/

URL: https://www.reasonablefaith.org/question-answer/P610/pruss-on-forming-an-actual-infinite-by-successive-addition

URL: https://www.reasonablefaith.org/question-answer/P670/pruss-on-forming-an-actual-infinite-by-successive-addition

URL: https://www.reasonablefaith.org/question-answer/P650/pruss-on-forming-an-actual-infinite-by-successive-addition

URL: https://www.reasonablefaith.org/question-answer/P660/pruss-on-forming-an-actual-infinite-by-successive-addition