Cita APA (7a ed.)

Burkhardt, H., & Smith, B. (1991). Handbook of metaphysics and ontology. Philosophia.

Cita Chicago Style (17a ed.)

Burkhardt, Hans, y Barry Smith. Handbook of Metaphysics and Ontology. München [etc.]: Philosophia, 1991.

Cita MLA (9a ed.)

Burkhardt, Hans, y Barry Smith. Handbook of Metaphysics and Ontology. Philosophia, 1991.