His Marx, dalla filosofia ... 1974.

¿Cómo se interpretan las normas jurídicas?, 2018: title page (Riccardo Guastini) page 4 of cover (professor, University of Genoa; Italian jurist)

Università di Genova, Dipartmento di Giurisprudenza webpages, viewed March 3, 2020 (professor ; CV: born January 25, 1946, doctorate in law, Università di Genova) https://giurisprudenza.unige.it/en/Department/curriculaprofessors