Παραπομπή APA

Frey, B. S. (1997). Not just for the money: An economic theory of personal motivation. Cheltenham, UK: Edward Elgar Pub..

Παραπομπή Chicago Style

Frey, Bruno S. Not Just for the Money: An Economic Theory of Personal Motivation. Cheltenham, UK: Edward Elgar Pub., 1997.

Παραπομπή MLA

Frey, Bruno S. Not Just for the Money: An Economic Theory of Personal Motivation. Cheltenham, UK: Edward Elgar Pub., 1997.

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