MLA
Luther, Martin, 1483-1546. Kirchen Postilla, das ist, Auslegung der Episteln vnd Euangelien an Sontagen vnd furnemesten Festen. 1554. Richard C. Kessler Reformation Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/26663xsmp1-cor.
APA, 6th edition
Luther, Martin, 1483-1546. (1554)[Kirchen Postilla, das ist, Auslegung der Episteln vnd Euangelien an Sontagen vnd furnemesten Festen, Aufs new corrigirt vnd gebessert.]. Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/26663xsmp1-cor.
Chicago
Luther, Martin, 1483-1546, Kirchen Postilla, das ist, Auslegung der Episteln vnd Euangelien an Sontagen vnd furnemesten Festen, 1554, Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/26663xsmp1-cor.