Herle, Charles. A Fuller Answer to the Treatise Written by Dr. Ferne. London, 1642, (Accessed: Collins Memorial Library Archives, University of Puget Sound).
Ferne, Henry. The Resolving of Conscience upon This Question Whether upon Such a Supposition or Case as Is Now Usually Made (the King Will Not Discharge His Trust, but Is Bent or Seduced to Subvert Religion, Laws, and Liberties) Subjects May Take Arms and Resist, and Whether That Case Be Now ... / by H. Fern. York: Printed by Stephen Bulkley, 1642., 1642.