1. Neuropsicologia del linguaggio;Aglioti, Salvatore M.,2006
2. The emergence of symbols: cognition and communication in infancy;Bates, Elizabeth,1979
3. Phonological awareness, reading and reading acquisition: a survey and appraisal of current knowledge;Bentin, Shlomo,1992
4. Voice-selective areas in human auditory cortex;Berlin, Pascal,2000
5. Bogdan, Robert; Biklen, Sari Knopp (1982). Qualitative research for education: an introduction to theory and methods. Boston: Allyn and Bacon.