Cita APA (7th ed.)

ebrary, Inc, & Poli, R. (2010). Causality and motivation. Ontos Verlag.

Cita Chicago (17th ed.)

ebrary, Inc, i Roberto Poli. Causality and Motivation. Frankfurt ; New Brunswick: Ontos Verlag, 2010.

Cita MLA (9th ed.)

ebrary, Inc, i Roberto Poli. Causality and Motivation. Ontos Verlag, 2010.