Cita APA (7th ed.)

ebrary, Inc, & Kanzian, C. (2008). Persistence. Ontos Verlag.

Cita Chicago (17th ed.)

ebrary, Inc, i Christian Kanzian. Persistence. Frankfurt: Ontos Verlag, 2008.

Cita MLA (9th ed.)

ebrary, Inc, i Christian Kanzian. Persistence. Ontos Verlag, 2008.