MLA
Flacius Illyricus, Matthias, 1520-1575, author. Demonstrationes evidentissimae XXX. praesentiae, distributionisq[ue] corporis ac sanguinis Christi in sacra coena, hactenus multis minus cognitae.. XXXX. Richard C. Kessler Reformation Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wxxs-cor.
APA, 6th edition
Flacius Illyricus, Matthias, 1520-1575, author. (XXXX)[Demonstrationes evidentissimae XXX. praesentiae, distributionisq[ue] corporis ac sanguinis Christi in sacra coena, hactenus multis minus cognitae.]. Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wxxs-cor.
Chicago
Flacius Illyricus, Matthias, 1520-1575, author, Demonstrationes evidentissimae XXX. praesentiae, distributionisq[ue] corporis ac sanguinis Christi in sacra coena, hactenus multis minus cognitae., XXXX, Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wxxs-cor.