Frey, B. S. (1999). Economics as a science of human behaviour: Towards a new social science paradigm (Extended 2nd ed.). Kluwer Academic.
Lua i Stíl Chicago (17ú heag.)Frey, Bruno S. Economics as a Science of Human Behaviour: Towards a New Social Science Paradigm. Extended 2nd ed. Boston: Kluwer Academic, 1999.
Lua MLA (9ú heag.)Frey, Bruno S. Economics as a Science of Human Behaviour: Towards a New Social Science Paradigm. Extended 2nd ed. Kluwer Academic, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.