Cita APA (7a ed.)

Acs, Z. J., & Audretsch, D. B. (1990). The economics of small firms: A European challenge. Kluwer Academic.

Cita Chicago Style (17a ed.)

Acs, Zoltan J., y David B. Audretsch. The Economics of Small Firms: A European Challenge. Dordrecht [etc.]: Kluwer Academic, 1990.

Cita MLA (9a ed.)

Acs, Zoltan J., y David B. Audretsch. The Economics of Small Firms: A European Challenge. Kluwer Academic, 1990.