Cita APA (7a ed.)

Ács, Z. J., & Audretsch, D. B. (1991). Innovation and technological change: An international comparison. Harvester Wheatsheaf.

Cita Chicago Style (17a ed.)

Ács, Zoltán J., y David B. Audretsch. Innovation and Technological Change: An International Comparison. New York [etc]: Harvester Wheatsheaf, 1991.

Cita MLA (9a ed.)

Ács, Zoltán J., y David B. Audretsch. Innovation and Technological Change: An International Comparison. Harvester Wheatsheaf, 1991.