MLA
Luther, Martin, 1483-1546. Eyn Sermon auff den vierden Sontag nach Ostern : Johannis 16. 1523. Richard C. Kessler Reformation Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/477sn02w0j-cor.
APA, 6th edition
Luther, Martin, 1483-1546. (1523)[Eyn Sermon auff den vierden Sontag nach Ostern : Johannis 16]. Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/477sn02w0j-cor.
Chicago
Luther, Martin, 1483-1546, Eyn Sermon auff den vierden Sontag nach Ostern : Johannis 16, 1523, Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/477sn02w0j-cor.