MLA
Melanchthon, Philipp, 1497-1560. Ethicae doctrinae elementa, et ennaratio libri quinti ethicorum : additae sunt quaestiones de iuramentis, de excommunicatione, & alijs quibusdam materijs. XXXX. Richard C. Kessler Reformation Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/996k0p2qcz-cor.
APA, 6th edition
Melanchthon, Philipp, 1497-1560. (XXXX)[Ethicae doctrinae elementa, et ennaratio libri quinti ethicorum : additae sunt quaestiones de iuramentis, de excommunicatione, & alijs quibusdam materijs, ]. Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/996k0p2qcz-cor.
Chicago
Melanchthon, Philipp, 1497-1560, Ethicae doctrinae elementa, et ennaratio libri quinti ethicorum : additae sunt quaestiones de iuramentis, de excommunicatione, & alijs quibusdam materijs, XXXX, Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/996k0p2qcz-cor.