Cita APA (7th ed.)

ebrary, Inc, Centi, B., & Huemer, W. (2009). Values and ontology: Problems and perspectives. Ontos Verlag.

Cita Chicago (17th ed.)

ebrary, Inc, Beatrice Centi, i Wolfgang Huemer. Values and Ontology: Problems and Perspectives. Frankfurt: Ontos Verlag, 2009.

Cita MLA (9th ed.)

ebrary, Inc, et al. Values and Ontology: Problems and Perspectives. Ontos Verlag, 2009.