Freytag, A., & Thurik, R. (2010). Entrepreneurship and culture. Springer.
Chicago Style aipamenaFreytag, Andreas, and Roy.,ed.by Thurik. Entrepreneurship and Culture. Berlin: Springer, 2010.
MLA aipamenaFreytag, Andreas, and Roy.,ed.by Thurik. Entrepreneurship and Culture. Springer, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.