Martínez Ferrer, Luis. Directorio para confesores y penitentes, 1996: title page (Luis Martínez Ferrer) back cover (born 1964)

Coisas do outro mundo, 2003: title page (L. Martínez Ferrer) back flap (Luis Martínez Ferrer; born 1964; professor at the Pontificia Università della Santa Croce in Rome)

Pontificia Università della Santa Croce website, viewed May 5, 2020: link to Docenti page (Prof. Luis Martínez Ferrer, Facoltà di teologia, Ordinario di Storia della Chiesa Moderna e Contemporanea; born October 12, 1964, in Madrid, Spain; studied geography and history at the Universidad Autónoma de Madrid and at the Universidad Complutense de Madrid; studied theology at the Pontificio Ateneo della Santa Croce in Rome; author of Directorio para confesores y penitentes) http://docenti.pusc.it/homepage/?u=Lmartinez