1. Abbagnano, Nicola, Dizionario di filosofia (Turin: Utet, 1998).
2. Abelson, H. and Sussman, G.J., Structure and Interpretation of Computer Programs (Cambridge, MA: MIT Press, 1996).
3. Acker, Wouter, and Pieter Uyttenhove, ‘Information and Space: Analogies and Metaphors’, Library Trends, 61.2, Special Issue (2012), pp. 271-285.
4. van den akker, Chiel, Susan Legêne, Marieke Erp, Lora Aroyo, Roxane Segers, Lourens Meij, and others, ‘Digital Hermeneutics: Agora and the Online Understanding of Cultural Heritage’, Journal of Automated Reasoning - JAR (2011), https://doi.org/10.1145/2527031.2527039
5. Alessio Giovanni and Battisti, Carlo, Dizionario Etimologico Italiano (Firenze: Barbera Università degli studi, 1965)