Cita APA (7th ed.)

ebrary, Inc, & Szatkowski, M. (2012). Ontological proofs today. Ontos Verlag.

Cita Chicago (17th ed.)

ebrary, Inc, i Mirosław Szatkowski. Ontological Proofs Today. Frankfurt ; New Brunswick: Ontos Verlag, 2012.

Cita MLA (9th ed.)

ebrary, Inc, i Mirosław Szatkowski. Ontological Proofs Today. Ontos Verlag, 2012.