- The Ontology of Social Being, Volume 2. Marx
- Ontology of Social Being, Volume 3. Labour
- The Ontology of Time: Being and Time in the Philosophies of Aristotle, Husserl and Heidegger
- Ontology View: a new sub-ontology extraction method
- Ontology Engineering with Diagrams: A Practical User Guide
- The Political Ontology of Martin Heidegger
- Building Ontologies with Basic Formal Ontology
- Legal Ontology Engineering: Methodologies, Modelling Trends, and the Ontology of Professional Judicial Knowledge
- Ontology Representation: design patterns and ontologies that make sense
- Epistemology versus Ontology
- The Ontology of Social Being, Volume 1: Hegel
- Political Ontology and International Political Thought
- The Ontological Politics of Disablement: Heidegger, Disability, and the Ontological Difference
- The Mind's Construction: The Ontology of Mind and Mental Action
- Ontology, Conceptualization and Epistemology for Information Systems, Software Engineering and Service Science