A Treatise of Legal Philosophy and General Jurisprudence : Volume 1:The Law and The Right, Volume 2: Foundations of Law, Volume 3: Legal Institutions and the Sources of Law, Volume 4: Scienta Juris, Legal Doctrine as Knowledge of Law and as a Source of Law, Volume 5: Legal Reasoning, A Cognitive Approach to the Law - Corrado Roversi (Springer)