Ricius, P., & Weissenhorn, A. . I. (1530). Ad principes, magistratus, populosq[ue] Germani[a]e, in Spirensi co[n]uentu, Pauli Ricii, Oratio. in officina Alexandri Vueyssenhorn.
Chicago Style (17th ed.) CitationRicius, Paulus, and Alexander I. Weissenhorn. Ad Principes, Magistratus, Populosq[ue] Germani[a]e, in Spirensi Co[n]uentu, Pauli Ricii, Oratio. Augustae Vindelicorum: in officina Alexandri Vueyssenhorn, 1530.
MLA (9th ed.) CitationRicius, Paulus, and Alexander I. Weissenhorn. Ad Principes, Magistratus, Populosq[ue] Germani[a]e, in Spirensi Co[n]uentu, Pauli Ricii, Oratio. in officina Alexandri Vueyssenhorn, 1530.
Warning: These citations may not always be 100% accurate.