Luther, M., Melanchthon, P., & Eusebius Pamphilus. (1554). [A faythful admonycion of a certen trewe pastor.]. By Conrade Freeman [id est W. Rihel].
Chicago Style (17th ed.) CitationLuther, Martin, Philip Melanchthon, and Eusebius Pamphilus. [A Faythful Admonycion of a Certen Trewe Pastor.]. [Imprynted at Grenewych [id est Strasbourg]: By Conrade Freeman [id est W. Rihel], 1554.
MLA (9th ed.) CitationLuther, Martin, et al. [A Faythful Admonycion of a Certen Trewe Pastor.]. By Conrade Freeman [id est W. Rihel], 1554.
Warning: These citations may not always be 100% accurate.