H. Rashdall, Article on Wycliffe in _Dictionary of National Biography_ (1900), vol. lxiii.
A. H. Wratislaw, _Native Literature of Bohemia in the Fourteenth Century_ (1878).
Count Lützow, _The Life and Times of Master John Hus_ (1909).
H. Rashdall, _Universities of Europe in the Middle Ages_ (1895), vol. ii.
Also of course M. Creighton, _History of the Papacy_ (1903-9), Introd. and Books I and II.
GENERAL ECCLESIASTICAL HISTORIES AND WORKS ON HERESIES
C. H. Hahn, _Geschichte der Ketzer_ (Stuttgart, 1845-50).
J. J. v. Mosheim, _Institutes of Ecclesiastical History_ (Eng. tr., 2nd ed., 1850).
J. C. L. Gieseler, _Ecclesiastical History_ (Eng. tr. 1853), esp. vol. iii, which contains extracts from documents.
F. Milman, _History of Latin Christianity_ (4th ed. 1883), esp. vols. v and vi.
J. J. Döllinger, _Beiträge zur Sektensgeschichte_ (Munich, 1890).
A. Harnack, _History of Dogma_ (tr. W. Gilchrist, 1894-9).
See also on special subjects the following:
F. Gregorovius, _History of the City of Rome in the Middle Ages_ (tr. A. Hamilton, 1894-1902), vols. v and vi.
J. H. Reusch, _Der Index der verbotenen Bücher_ (Bonn, 1883).
J. Guiraud, _Saint Dominic_ (Eng. tr., 1901).
P. Sabatier, _Life of Saint Francis of Assisi_ (tr. L. S. Houghton, 1904).
H. O. Taylor, _The Mediæval Mind_ (1911).
E. Renan, _Averroës et l'Averroïsme_ (Paris, 1861).
P. F. Mandonnet, _Siger de Brabant et l'Averroïsme latin au XIIIe siècle_ (Fribourg, 1899), with invaluable appendix containing Siger's _Works_.
M. de Wulf, _History of Mediæval Philosophy_ (Eng. tr., 1909).
B. Hauréau, _Histoire de la Philosophie Scolastique_ (Paris, 1880).
C. Douais, _Essai sur l'organisation des études dans l'ordre des Frères-Prêcheurs_ (Paris, 1884).
_Registrum epistolarum fratris Joannis Peckham_ (Rolls Series, ed. C. T. Martin, 1884).
Rutebeuf, _OEuvres Complètes_ (1874-5), vol. i, _passim_.
_De Tribus Impostoribus_ (ed. Philomneste Junior, _i.e._ P. Gustave Brunet, Paris, 1861).
J. Owen, _Skeptics of the Italian Renaissance_ (1893).
ON THE GENERAL QUESTION OF FREEDOM OF THOUGHT AND THE THEORY OF RELIGIOUS PERSECUTION
J. Locke, _Letters concerning Toleration_.
W. E. H. Lecky, _History of Rationalism in Europe_, ch. iv.
Sir F. Pollock, _The Theory of Persecution_ in _Essays in Jurisprudence and Ethics_ (1882).