Mosellanus, Petrus ; Luther, Martin: De Ratione disputandi, prae||sertim in re Theologica, Pe=||tri Mosellani Protege[n]sis or[ati]o.|| : quam illustriss. Georgij Saxon[ensis]. ducis &c. prin||cipis sui nomine, in frequentissimo illu=||strium aliquot, & doctissimorum || hominu[m] conuentu. [...]. [Leipzig] : [Lotter], 1519