Frey, B. S. (1999). Economics as a science of human behaviour: Towards a new social science paradigm (Extended 2nd ed.). Kluwer Academic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrey, Bruno S. Economics as a Science of Human Behaviour: Towards a New Social Science Paradigm. Extended 2nd ed. Boston: Kluwer Academic, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrey, Bruno S. Economics as a Science of Human Behaviour: Towards a New Social Science Paradigm. Extended 2nd ed. Kluwer Academic, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.