Tierney 1962, p. 54. Tierney, Brian (1962). ""Tria Quippe Distinguit Iudicia..." A Note on Innocent III's Decretal Per Venerabilem". Speculum. 37 (1). Medieval Academy of America: 48–59. doi:10.2307/2850598. JSTOR2850598. S2CID159599459.
Tierney 1962, p. 54. Tierney, Brian (1962). ""Tria Quippe Distinguit Iudicia..." A Note on Innocent III's Decretal Per Venerabilem". Speculum. 37 (1). Medieval Academy of America: 48–59. doi:10.2307/2850598. JSTOR2850598. S2CID159599459.
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Tierney 1962, p. 54. Tierney, Brian (1962). ""Tria Quippe Distinguit Iudicia..." A Note on Innocent III's Decretal Per Venerabilem". Speculum. 37 (1). Medieval Academy of America: 48–59. doi:10.2307/2850598. JSTOR2850598. S2CID159599459.