APA
Acs Z. J. (., Audretsch D. B. (., . (1991). Innovation and technological change: An international compar. Ann Arbor: Uni of Michigan Pr.
Chicago
Acs Zoltan J (ed), Audretsch David B (ed), . 1991. Innovation and technological change: An international compar. Ann Arbor: Uni of Michigan Pr.
Harvard
Acs Z. J. (., Audretsch D. B. (., . (1991). Innovation and technological change: An international compar. Ann Arbor: Uni of Michigan Pr.
MLA
Acs Zoltan J (ed), Audretsch David B (ed), . Innovation and technological change: An international compar. Ann Arbor: Uni of Michigan Pr. 1991.