APA (7th ed.) Citation

Audretsch, D. B., & Acs, Z. J. (1990). Innovation as a means of entry: An overview. WZB.

Chicago Style (17th ed.) Citation

Audretsch, David B., and Zoltán J. Acs. Innovation as a Means of Entry: An Overview. Berlin: WZB, 1990.

MLA (9th ed.) Citation

Audretsch, David B., and Zoltán J. Acs. Innovation as a Means of Entry: An Overview. WZB, 1990.