APA (7th ed.) Zitazioa
Coffey, P. ONTOLOGY OR THE THEORY OF BEING: AN INTRODUCTION TO GENERAL METAPHYSICS.
Chicago Style (17th ed.) Zitazioa
Coffey, P. ONTOLOGY OR THE THEORY OF BEING: AN INTRODUCTION TO GENERAL METAPHYSICS.
MLA (9th ed.) Zitazioa
Coffey, P. ONTOLOGY OR THE THEORY OF BEING: AN INTRODUCTION TO GENERAL METAPHYSICS.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.