González del Valle, J. M. (1971) «CHARLES H. O’BRIEN, Ideas of religious toleration at the time of Joseph II. A study of the enlightment among catholics in Austria, en “Transactions of the American Philosophical Society”, 1 vol. de 84 págs., de 24 X 30 cms., Ed. The American Philosophical Society, Filadelfia, 1969», Ius Canonicum, 11(22), pp. 504-505. doi: https://doi.org/10.15581/016.11.21451.