Ryan, J. J. (1951). Cardinal Humbert of Silva Candida and Auxilius: The 'Anonymous Adversary' of Liber I Adversus Simoniacos. Mediaeval studies, 13, 218-223. doi:10.1484/J.MS.2.305916
Cita Chicago Style (17a ed.)Ryan, J. Joseph. "Cardinal Humbert of Silva Candida and Auxilius: The 'Anonymous Adversary' of Liber I Adversus Simoniacos." Mediaeval Studies 13 (1951): 218-223, https://doi.org/10.1484/J.MS.2.305916.
Cita MLA (9a ed.)Ryan, J. Joseph. "Cardinal Humbert of Silva Candida and Auxilius: The 'Anonymous Adversary' of Liber I Adversus Simoniacos." Mediaeval Studies, vol. 13, 1951, pp. 218-223, https://doi.org/10.1484/J.MS.2.305916.
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