The Necessity of Baptism

Catechism of Trent
http://www.catholicapologetics.info/thechurch/catechism/trentc.htm
The Pohle Preuss Manual of Dogmatic Theology
https://iteadthomam.blogspot.com/2017/09/pohle-preuss-dogmatic-theology-12-vols.html
Sacrae Theologiae Summa IVA 175
https://isidore.co/calibre#book_id=7425&library_id=CalibreLibrary&panel=book_details
The Controversies VI Bellarmine
https://mediatrixpress.com/product/on-the-sacraments-in-general-baptism-and-confirmation/
Summa Theologica Part III Q 86 and 73
https://www.newadvent.org/summa/4.htm
Baltimore Catechism
https://www.catechism.cc/catechisms/Baltimore_Catechism.pdf