MLA
Melanchthon, Philip, 1497-1560, author. Epitome expositionis catechismi D. Philippi Melanth. relata ad interrogationes et responsiones ut uere sit quod dicitur catechesis : Cui addita est expositio symboli, et orationis dominicae, ... ab Alexandro Alesio, S.Theologiae Doct. Iam denuo recognita, multis[que] in locis aucta, unà cum Praefatione ab ipso authore addita.. XXXX. Richard C. Kessler Reformation Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/000000023v-cor.
APA, 6th edition
Melanchthon, Philip, 1497-1560, author. (XXXX)[Epitome expositionis catechismi D. Philippi Melanth. relata ad interrogationes et responsiones ut uere sit quod dicitur catechesis : Cui addita est expositio symboli, et orationis dominicae, ... ab Alexandro Alesio, S.Theologiae Doct. Iam denuo recognita, multis[que] in locis aucta, unà cum Praefatione ab ipso authore addita.]. Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/000000023v-cor.
Chicago
Melanchthon, Philip, 1497-1560, author, Epitome expositionis catechismi D. Philippi Melanth. relata ad interrogationes et responsiones ut uere sit quod dicitur catechesis : Cui addita est expositio symboli, et orationis dominicae, ... ab Alexandro Alesio, S.Theologiae Doct. Iam denuo recognita, multis[que] in locis aucta, unà cum Praefatione ab ipso authore addita., XXXX, Richard C. Kessler Reformation Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/000000023v-cor.